I dropped by a store today and the employee’s suggestion was as follows:At my local store they turned people back who came early. Why? Because there are other people waiting in line for the timeframe of current time.
1. Show up 5 minutes before the beginning of your reservation. They will help you if there’s no one waiting from the previous window. Ideally, get in and out quickly.
2. There will be one line for people without a reservation and a separate line for people with a reservation.
3. The reserved line will be first come, first served for the current window. If there’s no one waiting for the current window, they will help people in the next window. I did not ask about if you are over 30 minutes early or late.