Why don't coupons work in New Mexico? Was the lady at Starbucks confirming my belief that it really isn't part of America?

Breakfast: I made real oatmeal again but something went wrong - I still ate it. ($0)
Lunch: Raquel made some interesting tortillas, I made a quesadilla with them and she gave me an avocado on the side.  I had an orange too ($0)
Snack: I met with a friend at Starbucks to do homework, I had a voucher to get a free drink from filling out a survey.  For some reason they said I couldn't use the voucher (I think because I earned it in CA and NM is an international location).  They still gave me my drink for free and let me keep the voucher ($0)
Dinner:  One of my first shopping trips I bought a 4 pack of garden burgers that I hadn't eaten yet.  I had one of them with some gouda and avocado on top.  I also cooked up the expiring snap peas and had them on the side ($0)
Snack: I went to this show thing Saturday night and was super thirsty so bought a Sprite ($1)