We scheduled several sightseeing for Amsterdam. The directions to the meeting sites for everyone of the tours were terrible. We had trouble finding all tours. For 3 tours, even though we were in the vicinity of each 45 minutes early, we couldn’t find them. AND we completely missed the last (4th) trying to find the meeting place. We called the phone number on the paperwork and it wouldn’t work. I called to report this to the Viator office and they would not refund our money. We will NEVER use Viator or any of their company affiliations, like TripAdvisor and Trivago again. All part of the same company.