Ypu mean like these guys....been there, done that....amd yes, the border is thickly guarded. How else are they to make money?
"We’d not had the best border crossing from Mexico to Belize a few days earlier, with an attempted scam on the Mexico side that we’d artfully avoided and an intense questioning session from immigration as we’d entered Belize. We’d done our research on the Belize-Guatemala border, though, and had read there would be various attempts at bribes as we passed across.
We made it out of Belize without a hitch, but it was when we crossed the river and reached the Guatemalan side that we ran into problems..."
Stay in school, kids.