I really hate what they have done to TripAdvisor. It used to be you went there and the companies with the best reviews were at the top. Now they have redesigned the site to show the tours booked on Viator first. Some of those tours are terribly rated. This is a slap in the face to all the people who worked so hard writing reviews and all the companies that have top ratings but do not sell through Viator. This monitization is on the backs of all the hard working people and has made TripAdvisor kind of a big lie. Beware the big yellow "Book Now" buttons you see on trip advisor, you are likely going to get a much worse tour than if you dig down and read the real reviews for the real top rated companies. Book through the companies themselves, don't let Viator ruin a great review site.