My husband and I had never done a group travel tour before...as we usually go on our own, but we used GAP for a trip to the Galapagos Islands. Though the booking process could be confusing, everything went very smooth and we had a FANTASTIC trip! I would recommend this trip to anyone interested in the Galapagos.. I wrote a blog about my trip, which is posted here:
http://pinkbirdcreations.blogspot.com/2008/06/our-boat-in-galapagos-life-on-board.html
and here: http://pinkbirdcreations.blogspot.com/2008/05/ecuador-and-galapagos-islands-photo.html
There is a more detailed review with heaps of photos, Happy Travels!