Nice report! I particularly liked the old fashioned introduction, with the "in which" descriptions - I'm always a sucker for that.
Belize is fairly high up my 'to visit' list, so this was a very useful trip report. I was also interested in your experiences connecting through IAH, as I'd probably do the same thing. The CO site seems to allow alarmingly short connections from both from domestic > international and vice versa - how long did it take for you?