When my SS is deposited in the bank, I pay all of my bills, and then go shopping. I have a list, and get most everything that I need on that day. Quite a bit of what I buy is in bulk, I like to stock up, so I don't HAVE to go to the store all the time. I don't foresee a need to use my debit card, and I don't see why everyone is harping on it. I really don't see a problem.
I have specific shopping habits that won't be changing. I don't eat out, so my card won't be used in restaurants, I'll be going to the states every weekend to work and contra dance, and if there's a weekday event that I'll be working, and IF there's something that I need, I'll get it on the way home. I live directly behind an ethic grocery store (North Park Produce), and I rarely go in there to shop for anything, I might go in there once every couple of months for produce, but it's rare that I go in there.
If I need something, I plan for it, and if I'm out, I'm out until the next day. I don't "run" to the store all the time, my purchases are planned. I won't be pulling pesos out of any ATMS, I don't use foreign ATMS, even in San Diego. Why do I have to keep repeating myself?
Neither of my banks do exchanges, and I have no reason to ask them. If I foresee the need to start using the ATM'S in TJ, I can start an account with Charles Schwab, and any fees are reimbursed.