However, one conversation went like this:
"....and I would like an iced tea."
"Sweet or unsweet?"
"Oh, HOT tea? Sorry, I misunderstood."
"No, I would like UNsweet iced tea."
I did end up with an unsweet iced tea. However, when I stopped someone to top off a carry out cup and said, "Could you refill this with UNsweet tea?," I ended up with sweet tea. When I explained to the hostesses that I actually wanted UNsweet tea but got sweet, they looked totally confused, as if they had never heard of UNsweet tea nor had they ever met a creature who would make such a request. This scene was repeated pretty much our entire vacation.
During this trip, we ate at the "world's largest McDonald's" (yes, there is a McDonald's that boasts this fact, and I assure you, it is a huge McDonald's) and I got my own UNsweet tea. The dispenser clearly said unsweet. Guess what? They were messing with me. It was totally filled with sweet tea.