I work fast food. When shorthanded, which is all the time, if the line is wrapped around the building but the customers are at least not coming inside, service can be at least normal slow instead of slower than fuck. More customers can be served per hour via drive through than front counter with any level of staffing. When people start coming inside, suddenly drive through employees are getting stuck standing in front of registers and overall service speeds go from just slow to slower than fuck.
I work fast food. When shorthanded, which is all the time, if the line is wrapped around the building but the customers are at least not coming inside, service can be at least normal slow instead of slower than fuck. More customers can be served per hour via drive through than front counter with any level of staffing. When people start coming inside, suddenly drive through employees are getting stuck standing in front of registers and overall service speeds go from just slow to slower than fuck.