Belikin (my favorite beverage) Joe,
1. As far as I know, the only bridge pass would be monthly for $75 US.
2. The water taxis I think are very reliable. We don't use them very often and when we do, it's one of the private taxis......we like to come and go when WE want to. The cost of renting a golf cart for a week is a big expense......then again, it gives you the freedom to come and go on YOUR schedule. Captain Morgan's has a small fleet of boats that take guest back and forth....no idea of the charge if any.
3. Guides.......someone else will have to give you that info....we're fortunate in as much as we have a good friend on the island that has her own boat that we fish on.
4. Palapa Bar is open everyday......one of our favorites also....don't forget to have a couple of "cherry bombs" while you're there!