"Seen few places with Jamaican prices most U.S. some both."
You need to check the West End more. Here I'd say more places price in JMD than in USD.

I'm a firm proponent of changing your money to local currency no matter what. First I've seen what NOT doing that does to a local economy (here in Jamaica) and why things have gotten so much more expensive in Negril in recent years. Second - think about - would you go to Europe, not change money and expect that they will take your US or Canadian dollar?

When in Rome, as they say...

And I'm with Rob - bring on that list!