People tend to check in during these times:
Visitor center gift shop better than the museum gift shop.
Cadet store has much better prices and no tax; however, the selection is much better at the WP Visitors Center & Museum.
Coolest military base. If you're lucky, you'll score football tickets for Army vs Navy.
Watch out for the door at the gift shop. It is automatic but on a delay so when you pull it the motor will take over. A little girl in our group got smashed in the face when the motor took over! :-(
Awesome museum totally worth a trip.
Glad I stopped here. In just over an hour, I got an interesting introduction to American military culture, contemporary and historical.