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.
Because I don’t want to have to prepare my own drinks; that’s why I came to a restaurant instead of eating at home.
Do you also need someone to pour it in your mouth?
I don’t think it’s bizarre to expect that my food be in ready-to-eat condition when it’s served, why should drinks be any different?
Calling dropping a tea bag in a cup of hot water “preparing a drink” is a bit of a stretch