Attendees who pre-registered for SLEEP 2015 can take advantage of exclusive early check-in hours from 4:30 p.m. to 6:30 p.m. on Friday, June 5. Avoid the Saturday morning crowds by checking in early to get your meeting badge and conference materials. Remember to bring a printed copy of your confirmation email so that you can use the convenient ExpressPass® lanes at the registration kiosks at the Washington State Convention Center. The Friday evening registration time slot is for pre-registered attendees only.