I'm thinking of diving Galapagos with Aggressor in 2012. I've done quite a few liveaboards, but haven't run into a situation like this where lots of weeks are prebooked. I'm finding that many of the weeks in Aug and Sept are taken by groups (marked on the web site as "Whole Group"). There is a five week period when both boats are booked by groups. My travel plans are flexible so I can join a (non-group) boat before or after this five week period. But I'm wondering if it's ok to try joining one of the groups? I called Aggressor and they gave me contact info for one of the group weeks. I did this to get a feel for who had the week and see if it might be appropriate to contact them. What do people think?