we just exchanged currency

[gregandkelly63]

Well, in both this case and yours people were merely trying to help. I undrestand you not caring much about saving $100US over the course of your trip, but the thing is, in this case they're just handing the difference to a bank. Banks don't need to make any more than the fees they already do. If the op exchanged in Negril, at a cambio or atm then they could spread that money around Negril, rather than fattening the coffers of a bank.

Thank you for proving my point.