Last summer when the Oasis Canteen opened near the Indiana Jones Epic Stunt Spectacular, I was proud of myself for figuring out that Field Tent # 61281 stood for the date that Raiders of the Lost Ark debuted. I guess in my own self-appreciation I failed to notice the other Indiana Jones reference hidden in this counter service restaurant.
If you look at the menu posted, you'll see that Field Tent # 61281 is still there on the bottom of the menu, but if you look above the menu, there's something else hidden there.
It says "TOP SECRET INTEL # 9906753". This number refers to the end of Raiders of the Lost Ark when Indiana Jones delivers the Ark of the Covenant to American authorities who deliver it to "top men" and promptly store it in a vast warehouse.