If you wanna keep your blood pressure in check and get your order correct do NOT use the drive thru...............It's not that big of a deal to park walk inside place your order check your order at the counter.........then leave.
For some reason I do not understand almost all FF joints put their worst employee's in the drive thru! Then top that off with multiple drive thru lines and it's a recipe for a disaster............
Think leathal weapon 2 and the funny but true line Joe pesci extols about a drive through..............
Three can keep a secret................If two of them are dead! (Benjamin Franklin)