WATCH: 'Potter' Fans Turn Out in Droves, Dress for the Occasion

Hundreds of Harry Potter fans lined up for 17 sold-out shows at the AMC Loews Theater in Stony Brook on Thursday night, and by 9 p.m., for those late to the party, the only available showtime was a 3 a.m. IMAX screening. The biggest fans were the ones easiest to pick out – they were the ones waiting seven hours in line to get the best seats, reading a Harry Potter book while waiting, or dressed up in costume. For some, however, underneath the costumes are some very emotional thoughts about having grown up with Harry Potter and his friends, and what it means now that J.K. Rowling's epic journey has ended.