xenopredator

Hey, everyone. Im attending this year, and its my first time going to one of these events. Im a big Alien and Predator fan, which is my main reason for coming this year. Too good to miss. Im planning to bring my Alien definitive edition DVD cases to get signed, as they are in a nice metal tin. My question is, do they have various different pens they can use to sign different materials - or are we expected to bring pens if its something other than photos/plastic? Ive bought some permanent markers which should write on metal ok, but was hoping they might have some fancy silver/gold markers that would work ok on the DVD cases... Its a fairly trivial matter, I know, but I dont want their autographs smudging off now do I? lol Thanks.