If you purchased online, see your confirmation on the ticket purchase. If it instructs you to pick up a ticket at will-call, then go get it. You will want the official ticket as a back-up. Also write down and SAVE your voucher or ticket # and name and date of purchase. In case you lose your band, or MDE has a data dump (gee, that NEVER happens ) you need to be able to prove to guest services you have a ticket!