We are heading to Cancun in a couple weeks and we will be staying at a all inclusive. My question is what is the best way to exchange some US dollars to Pesos? I have read a lot and it seems a lot of travel sites recommend using my ATM card at a bank ATM machine. One of my concerns is will I be able to exchange it back over to US dollars before leaving Cancun? We don't plan on doing a lot outside of the resort other than some shopping in the hotel zone and maybe a round of golf. Can anyone who has any experience with this please give me some help? Thanks!