If I remember correctly, the event starts around 1pm so there might be time in the morning. Personally I should be able to come to Berlin the day before already.
Agenda Thursday, June 28, 2012 8:30 AM - 9:30 AM Onsite Registration Opens 9:30 AM - 10:00 AM Welcome Keynote 10:00 AM - 10:45 AM BlackBerry®10 Architecture Overview (BB01) 10:45 AM - 11:00 AM Break 11:00 AM - 11:45 AM BlackBerry10 Experience Overview (BB02) 11:45 AM - 12:30 PM App World Monetization and Platform Services, Including Enterprise App World (BB03) 12:30 PM - 1:30 PM Lunch and App Pitches 1:30 PM - 3:00 PM Breakout Sessions 3:00 PM - 3:15 PM Break 3:15 PM - 4:45 PM Breakout Sessions 4:45 PM - 5:30 PM BlackBerry10: Dev Alpha Distribution 5:30 PM - 6:30 PM Reception (Final Remarks, and app pitch winners announced)