Hello. We have done Lamanai/New River excursion twice. Summer 2004, and most recently this last december. Both times we booked through RCCL. Do a word search on this site to pull up all my prior posts on this wonderful excursion. You have to first sign in, then click on the "Find" tab and type in Lamanai/New River, and my many posts should come up. If this doesn't work, it should thought. I will be more than willing to answer any questions you have. Let me know.