I stopped by Wal Mart at lunch and picked up something small so I said "I'll take that without a bag." The lady grabbed the item, stuck it in the bag then looked at me. Again I said, "I'll take that without a bag if that's ok", that's me being environmentally friendly and not wasting a bag. Then cashier lady says ok, grabs my stuff out and hands it to me, then immediately pulls the bag off the rack and throws it in the garbage.
I'm not sure what Wal Marts official stance is, but the behavior seems to be that at least one plastic bag must be thrown away per customer. I was so frustrated.