This probably isn't you but for those who are new to the road in general:Passports and tickets are only at risk if you hide them with your cash and get taken by accident. Of course you should have nothing of personal value like jewelry, unneeded plastic cards,your favorite Zippo,your Blackberry,cell phone that doesn't work,new expensive clothes that you care about.
On Caye Caulker ninety percent of thefts from tourists reflect one or both of these features: the visitors had the guy in the room at some point and/or they sleep with their room door open for the breeeze. We don't have hold ups -just petty harmless sneaks. Caye Caulker is a low crime small town.
Another social note.You may find island locals warning you against other Belizians they notice making friends with you.Take heed. Local scam is for him to tell you locals "hate" him -the bad guy- because
he is(pick one)
2 Alien (creole for Latin American Spanish looking)
3 White (this is usually TJ)
This works quite well on good harted folks who respect the locals everywhere they go.From our point of view the sophistication of our local con artists is embarrassingly primitive but folks still hand them money at a steady rate.