The thing is if you have a reservation, for example, at 4:00 because you get into Belize City at 3:00 but your plane from the States is late, it's OK if you've missed your 4:00 to San Pedro. Your reservation is still good for the next flight if they have room.
If you've made a reservation and you are on time then you have no worries, no muss, no fuss. If you haven't made a reservation, then you'll be at the ticket counter trying to arrange your transport (not that it is any big deal) when your head should already be totally gearing down.
I always leave all my cares and woes in Houston and pick them up again on my way home. Only each time I come home, the cares and woes don't seem as important as they were when I left them.
The problem then becomes the all consuming thoughts of how to get back down there and how to do that ASAP.