I deliver Gamestop because the driver for that commercial complex cannot get there by noon. When I make the delivery they normally don't have any packages ready to be picked up. He makes the pickup while he is delivering to the neighboring stores. I make a courtesy sweep, which usually consists of me stopping in front of the store and being told "yes/no" by one of the clerks, later in the afternoon after I pickup Staples. This works well for us and for Gamestop.
Just a tip from an old-timer, Dave. UPS gets a lot simpler once you stop caring.