Easy. Get the face to spread rumours that D&D is for Satan worshippers, start a moral panic, and get the security guards all tied up looking after a thousand petitioning middle-class parents out front. Next, intercept a few real con-goers en route to the hall, burst fire dual Narcojets by the sammy, now the whole team has badges. Stash the sleeping beauties in a locked utility closet. Deck into the GenCon host and change the photos associated with the badges, and stroll right in the door, chummer.