Any place will take US, however they are free to set their own exchange rate. Weathermon mentioned a good ATM to hit at Time Square. Every single time I have used it I have not had to deal with beggars or crack heads, I cannot say the same for the ATM's at the Scotia Bank. As far as cambio's I'll throw out the Banmarc up on the West End. Nice private stalls so nobody see your business. The only downside is it gets HOT in there, so do not go in there hungover. Ask where you are staying too, as I have found it is usually around 5JMD less than the cambio, however ultra convenient. I would lose that in taxi fare headed to a cambio or bank.