I went for day 3 in 2010...........Alyssa Milano was signing autographs
I flew out of B-Lo at 0500......got to Radio City Music Hall by 0930....stood in line until about 1000.....then they started letting people in. Stayed until the end......got back to the airport around 1900 for my 2230 flight. Was able to get on an earlier flight and was home by 2300.......it was a long Saturday
My advice for day one.......check the NFL.com website for attendance instructions and following them to a tee. For day 3, you can show up shortly after it starts and walk in without any problems