Sorry, I didn't explain well. The bookend part of the trip may not end up being Belize. That's why I'm still hesitating and that's why I want to know best guess for latest time to book and still be assured seats. If everything for the trip was already set in stone, you're right, I'd just reserve now. Anyone else have any idea or experience in this regard? Thanks again.

A fish and a bird can fall in love, but where will they build their nest?