Ranked in these QuestionsQuestion Ranking
Pro You can cancel tour anytime
Firstly I've booked wrong tour. It was no problem to cancel that booking and get the other one. Refund was instant.
Pro They are the cheapest tour service provider
They have the lowest prices (they commission is minimal so they don't need to rise their prices).
Pro Compare operators
You can compare tour operator in one single page. Other sites like getyourguide or viator have them separately.
Con There are still to few operators
They are working on adding more and more operators now, so there not so many options to choose from.