I released myself 48 hours after DS's birth as well. They wanted me to stay until Christmas day which would have made it a 3 nights stay but I wasn't having that! So I asked to leave on Christmas eve.
This time around I live only 5 minutes away from the hospital and they allow hubby to stay the first night as well, so I at least want to be in for 24 hours.
I guess I'll pack the baby 3 outfits? One for going home in and 2 to wear whilst we're there (one right after birth and another after her first bath.)