From the CDGC website this morning:
1) Registration Closes: June 20, 2011, 07:00 PM Eastern
2) Players CAN check-in Friday at Hornet's Nest. If you can't make it Friday, which by the way includes many, if not most, players CAN check-in Saturday morning at the course their division is playing.
ALL players MUST attend the Player's Meeting at the course their division is playing on Saturday morning. YOU DO NOT HAVE TO CHECK-IN AT HORNET'S NEST ON SATURDAY.