We booked 9:30am tickets for the coliseum in Rome and were told the day before by email that the time had changed to 9am and then we proceeded to get a text confirmation from Viator stating 9:30 later in the day so we figured we were all set. We were coming from a cruise ship so we didn’t have a lot of wiggle room. When we arrived the lady told us the tour had already gone in and we could just join them for the second half (missing the colisseum altogether). This was not an option for us as we really wanted to go into the colisseum. Lucky for us another family of 5 had canceled for later in the day so we were able to go in at 1pm but it completely screwed up the rest of our day. Not to mention the fact that the lady kind of had a too bad your late mentality when we were in time for our original tour. Two other tourists arrived about 3 minutes after us and were totally out of luck. They didn’t get to go at all. We reached out to Viator for a refund and said that they were sorry but based on the guidelines we didn’t qualify for a refund and they hoped we will use them in the future. This tour was not cheap for the 5 of us ($500) and we had to miss out on the second half of the tour due to having other plans. We will NEVER book with Viator again and would NOT recommend them. There are too many variables when traveling if they are willing to change on a whim. What you book is not what you get and it is far too expensive for that.