Don't worry, you will find food. You must be chartering outta Ambergris, so, provision there, if things are short there, why not go the few miles to Caulker and see if they have other options. We boated out of Placencia and plenty of choices for provisioning in Placencia. For a place to stay, I'd prefer some small island out on the reef..but gone are the days when you could do that for $50 a night and meals included for two.. Now they are several hundred or $$$$ more a night and you may not get more than jelly and bread in the morning for that.