Regards to cash: They had a change booth just before the exit. A little higher rate but easy. I changed $100 which took care of taxis to the hotel, port and some food and beverages at the shopping center. I got additional amounts at an ATM in the shopping center. Most out of pocket during the trip were tips for the tour guide and miscellaneous shopping items. Really didn't spend a lot of cash or credit cards. We're not shoppers.