We had a really small group of three people on the entire two (four with the guide). The guide was informative, and a professional that has been doing tours like this for years. She was able to answer questions and comment on many things outside of just what was on the tour. I don't travel often, nor take tours like this. Was surprised when my fellow tour guests provided a tip at the end, I didn't realize that was a thing. I felt bad for not doing the same, and while she did a great job, I am still of the opinion that I had paid for a service, and the service was delivered. End of transaction. There was never a guilt trip or any mention of a tip, so no issues there. Just be prepared for it. Would recommend this tour though.