Most, if not all, of the accommodations I have stayed in have some sort of guest 'manual' listing attractions, restaurants, emergency contacts and phone numbers. When I am visiting a location for the first time, I tend to devour this information.
Is it feasible to have a page about snorkeling in general (don't stand on or touch the coral, be aware of tides) and safety in particular (stay close to the pier, opt for the north side of the pier whenever possible, wear brightly colored swimwear)?
As has Lara, we've had many discussions with newcomers about staying out of the boat lanes only to have our concerns brushed aside with 'I'm an excellent swimmer' or something equally as irrelevant...and off they go.
In January, we had to get one of the guys from Eloy's boat repair to go pick up some first day tourists staying at Brianna's who started snorkeling/swimming due east from Patojo's dock after we warned them that the tide was going out and, as it was around 4:00, that there would be a lot of tour boats buzzing back and forth. They returned to shore, laughing about how they got a free ride home when they should have been horrified at the potential for disaster.
Maybe if they'd read a page in the manual (they had read about snorkeling at Patojo's) they wouldn't have been so quick to brush off our concerns for their safety.

Newfoundlanders are the only people in heaven who want to go home.