We decided to go on an ATV adventure and chose Black Diamond. We lucked out and were the only 4 on this tour (myself, my husband and two teenage boys-we each had our own ATV). It was a little cold and damp and Black Diamond had wet weather gear we could use. Be prepared to watch a safety video. Because we have all ridden before and were a small group, we could travel a little faster than we could have in a larger group. I'm NOT sure, but I think 8 is as big a group might be. We had the best guide, Giorgi. He was fun, kind, and knowledgeable about the area. He took lots of pictures for us. I am sure all the guides are great, but I would love to go back and have Giorgi again!