You don't even have to wait, just contact your bank or find a currency exchange place and they can get you set up before you leave!
Yeah but bank here Sucks like is no tomorrow they are F**king slow!! You lost your bank card take 3 weeks to get a new one the last time !!! Yeah I'll check for currency bank I think we got one in Ottawa!! Sent from my iPhone using Tapatalk
I heard there is a governmental push from Mexico City to get all the monies spent in Mexico to be only pesos, but I've not noted it actually getting any traction in the Yucatan's hotel/resort zones.
Use pesos when shopping to save on bad exchange by a vendor. Always print and carry on of these in your wallet..... Currency Converter - Yahoo! Finance