I know I am not going until May but I am trying to plan a few things (and I dream of it a lot too!) but I have a question but Isla Mujeres. From all your post I know to go from the EPM to Isla, I know that I can rent a golf cart and I know a few things to view and visit on the island.
My question is: what do I do with the golf cart while I visit a site or have a drink at a bar? Do they have private car keys (like normal car) and I can find a parking spot? Sorry I never used one of these things.