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.
There was a time when my day started with a French vanilla and a glazed sour cream donut every day. I haven’t really eaten much fast food in the last decade but I had that combo again on vacation this year and it was like chasing a bloc of sugar with pure syrup. How did I do it?