What to Check Before You Book Anything
Group size is the single most important thing to look at when booking any kind of tour or excursion, and most platforms bury it. Anything described as a "shared" or "group" experience on Viator or GetYourGuide is frequently a coach with forty strangers on it. If that sounds fine to you, great. If it doesn't, look for tours that explicitly state a maximum group size, or go directly to local operators who do private or small-group options.
Check the cancellation terms before you pay. The standard deal is a 24-hour window where you can cancel or reschedule without any fees. Cancel with less than 24 hours notice and you'll usually lose the full amount. Some discounted tours are completely non-refundable, so read the small print. As a general filter, look for tours that have reviews, customer support, and a cancellation policy. Those three things, in that order of importance, will separate the decent operators from the dodgy ones.
While you're reading the terms, actually read them. Some contracts include a clause saying that by joining the tour, you're giving the company permission to photograph you and use the images in their marketing without asking. That's not a hypothetical. It's buried in the fine print of more operators than you'd expect.
The Problem with Viator and GetYourGuide
Viator and GetYourGuide list over 300,000 experiences between them. That sounds impressive until you understand what they actually are. Neither of them is a tour operator. They're platforms that let local tour companies list their experiences and then take a cut. They're middlemen.
That matters when things go wrong. A traveller on the Rick Steves forum described booking a Paris excursion through Viator, only to get a cancellation email the night before. Too late to arrange anything else, probably because the local operator decided to go with someone paying them directly rather than give Viator a commission. If something goes wrong, you're stuck between the platform and the tour company, both pointing fingers at each other. The advice from experienced travellers is consistent: if you can, book directly with the operator. That way you're dealing with the people who actually run the tour.
That said, these platforms exist for real reasons. If you're in an unfamiliar city and need something booked quickly, the reviews alone are useful. GetYourGuide's popular tours often have thousands of reviews with near five-star ratings, which is a decent signal even if it's not a guarantee. Viator has a massive selection of everything. GetYourGuide is more curated with fewer options but generally higher quality. If you don't have time to research the local operator, either platform will mostly get you there. Just know the tradeoff.
One practical thing worth knowing: GetYourGuide charges your card two days before the tour, not when you book. And the guides on these platforms are independent operators who often list the same tour on their own website, sometimes cheaper. Worth a quick search before you confirm.
When a Tour Operator Is Actually Worth It
There's a certain type of traveller who insists on booking everything independently, as though using a tour company is some kind of failure. That's an overcorrection. Some places are simply inaccessible without one. The Demilitarised Zone in Korea, Bhutan, Chernobyl, Antarctica, these all require registered guides or special permits. Without a tour company, you're not going.
Beyond the logistical stuff, guided tours make a lot of sense in destinations where the cultural context is hard to navigate alone. In places where English isn't widely spoken or where scams targeting independent tourists are common, like parts of Cambodia or Morocco, a good local guide can be the difference between a great experience and a frustrating one.
When you book directly with a local operator, your money stays in the country. It goes to guides, drivers, small businesses. Local operators also tend to be more flexible when plans change. One traveller described calling a local company in Madrid when their Segway tour was about to start in a downpour. They rang up and within minutes had it rescheduled to the next day. A platform like Viator isn't going to move that quickly.
Tour companies also make financial sense more often than people assume. Operators negotiate bulk rates on attractions, hotels, and transport. A package through a tour company can end up cheaper than booking every component yourself. Always worth comparing before you assume the independent route saves money.
One specific case where the conventional wisdom flips completely: cruises. When you're on a cruise, do not be tempted to arrange shore excursions independently just to save a bit of money. Cruise lines charge more for the same trip, yes, but if the coach booked through the ship is late back to port, your ship will wait. If you're with an outside operator, it won't. That rule has ruined a lot of holidays.
When You Should Go It Alone
On a group tour, you get a fixed amount of time at each stop and you visit at the busiest time of day, when every other tour group is there too. If you're the kind of person who likes to wake up and decide what to do that morning, or who wants to visit places off-peak when it's quieter, a structured tour is going to frustrate you regardless of how good it is.
The independent option has never been more accessible. Train schedules are online, accommodation is one click away, and local subreddits and city-specific Facebook groups have become genuinely good research tools. Residents and expats who know the area share recommendations for authentic restaurants, warn about tourist traps, and post up-to-date info on entrance fees and common scams. It's better information than most travel websites.
For walking tours specifically, GuruWalk is worth knowing about. It's an international community that connects travellers with local guides for "free" walking tours. Free is a slight misnomer because you pay what you think it was worth at the end, with the average ending up between €10 and €20 depending on the city. The quality varies, as with anything, but the reviews on each guide's profile are usually reliable. A walking tour at the start of a stay is a decent way to get your bearings, learn a bit of history, and pick up ideas for the rest of your trip.
An approach that a lot of experienced travellers end up with is a hybrid. Handle the logistics yourself, book your own flights and accommodation, plan your own days, but hire a local guide for specific experiences that benefit from expertise. Spend a week in Prague on your own but book a private guide for a deep dive into Jewish Quarter history. It's not an ideology either way. Just a case-by-case calculation based on what you actually want to get out of each place.
The Best Source of Information Isn't a Booking Platform
If you're doing research before a trip and want to find out where a local actually eats or what they think of a popular excursion, the best source is often not a travel site at all. Ask your accommodation host. Airbnb hosts, guesthouse owners, hotel reception staff, most of them are happy to share recommendations and they have a direct interest in you having a good time. That's not a revolutionary insight. It's just how good travel information has always worked.