[ArtMonkDrillz]

I went to Bermuda a few years ago and they used their money and American money interchangeably. On a few occasions I would get change back and it would be made up of both types of money.
Granted, that's a tourist-heavy area, and that's why they accept our money, but I think they realized somewhere along the line that it was just a smart business decision.

As long as that pizza shop owner doesn't mind going through the hassle of exchanging the pesos himself there is no reason for him not to take them.