Has anyone been on a tour here? I see one from Cancun for 70.00 and one that leaves from Isla Mujeres for 40.00 both include lunch and snorkeling. I'm a big bird watcher, but if its just Pelicans and Frigate birds I can them about anywhere. I watch birds for the Cornell Lab of Ornithology's citizen science "Project Feederwatch". Thanks in advance. Not long to go now!!!!!