I walked in without an appointment today, right at store opening ... and the store got crowded right at the beginning. There were already people there with appointments, and a bunch of people (like me) without appointments.
From the FIRST CONTACT with an employee, it was less than five minutes and I had another employee dealing with my iPad. Within 15 minutes, he had reinstalled the system, BUT, offered me a new iPad. We were DONE in that 15 minutes!
Sounds like lots of people with lots of problems. Apple devices are the only retail products I know of that require that much attention.