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.
Same in amarica tho from what I’m hearing from states that aren’t Vermont I’m a little scared that I’m now living in Florida for college