In the South East, they bring you sweetened (usually far too sweetened for my tastes) iced tea. This is amazingly universal.
I live in NC and have been probing the border for years.
For “nicer” restaurants, the universal sweet tea boundary seems to be precisely at the NC/VA border.
That’s good to know. I usually have to cut McDonald’s sweet tea with water, and I’d rather not support them anyway, but next time I’m on the left coast I know where to get my fix. Thanks, Kolanaki!