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.
Americans in general don’t drink “tea” they drink coffee. Could be left over from revolution when tea became a symbol of British oppression.
We don’t drink tea in the same way as the British, but sweet tea is an extremely common drink in the south-east us. It’s almost certainly the top drink after soda and water.
In my experience they don’t drink coffee either, rather than over-roasted bitter tarmac
I’m watching my spending and figured I’d buy the “fruity light roast” from the grocery store and it tastes like what I imagine drinking an ashtray would taste like.