Before anything can/will be done at the top it has to start at the bottom. What I see/hear here; 'getting over' is an accomplishment that people are proud of.
Shame does not seem to be a part of the culture; when caught red-handed a simple 'my bad' seems to be the standard response.
How many times have you heard "s/he is a rich gringo - you can charge them a lot?"
Selldom do any of these cases seem to be that a Belizean is the one being taken advantage of. Am I wrong?
Don't say it can't be done - just look at what happened with trash over the past 10 years. Every day I see adult locals depositing their trash in a bin. It's not yet perfect but boy have we come a long way.
Education and time - the news media is the most powerful resource we have.