Is it a Rally's or Checkers?

They have drive thru windows on both side's of the building so you can go through either side for faster service.

I am so sorry about your knee pain. I have a kneecap that is off kilter a little (it's been this way since birth) and if I do too much it hurts a LOT, so I can empathize with you. Not a lot you can do if your knee hurts.