Cavetubing.bz can accommodate most travelers itineraries, including cruise ship passengers. The main guide Vitalino Reyes, is one of the cavetubing pioneers in Belize. Vitalino is very knowledgeable and accommodating. Tours are affordable and available to almost all sites on the mainland, as well as Tikal in Guatemala.
Cavetubing offers pick-up in Belize City among other places. If there's a tour your interested in but it's not listed, custom arrangements can be made.
http://cavetubing.bz
info@cavetubing.bz