We ordered a tour from Tripadvisor for a 12:00 noon tour of kremlin armory in moscow. We received a confirmation from trip advisor of the tour beginning at 12:00. On careful inspection of email voucher states 10:00 noon is the time for the tour. We called for clarification, and TripAdvisor was completely useless. They could not tell me when we should show up. They could not change the ticket, they told me I had to contact the vendor, but of course, the vendor has no support telephone number for me to change or clarify the when the tour actually begins. I find it very strange that I buy a ticket from TripAdvisor, there is a inconsistency between the times of the tour and TripAdvisor will not correct the problem