While on the Where's the Beef quest I keep getting random White Glove members attacking me. Especially after talking to Mortimor after his speech. The issue is when I leave the casino none of the weapons that I gave when I first entered are returned to me. This is highly annoying as I had several weapons and it even appears to have taken my brotherhood of steel power armor.

If your sneak skill is high enough you can sneak in to the cashier's section and steal back your gear.
Unfortunately I don't recall off hand what lockpick skill you need to be able to open the door and the safe.