We are planning a 5 week trip throught the Yucatan and Belize Feb & Mar. We would like to spend 2 weeks at least in Belize. Placencia has caught our attention. We want to immerse and stay in local cottages rather than resorts. Car rentals from Mexico OK in Belize? Any suggestions for us ie trips, fishing? What sort of costs are the accomodations? Do you need to book ahead of time?