US $$$ are good everyplace. Many places take credit cards but not everyplace so I would allow a little extra cash. If it has been a few years you will notice a lot of changes and higher prices so you will need to plan accordingly.

Butterfly Farm is great for kids and adults alike. Pretty sure jet skis are rented in town and I know Orient also but not sure on other places.

Do NOT leave anything at all of value in your vehicle, trunk or otherwise.