The doors at Comcast Center, on Maryland's campus, open at 6:30 p.m. on Friday, Oct. 17, and tickets are free on a first-come, first-served basis. Tickets can be had by calling the Terrapin Ticket Office at 1-800-IM-A-TERP. Free parking is ready on the surface lots at Comcast Center so you don't worry about that, just hope rush hour traffic on 495 is cleared by start time.