I always park at Sutherland school... (May be spelled wrong, but it's close)
They shuttle you over to SJF. You can look on the bills site, soon they should announce a schedule for the kids autograph tent, 14 and under... If you son is older than 14 I highly recommend you steal
A couple kids to send through the line for you...
I always go to the far practice field and sit as low as possible and closes to the middle. As soon as practice concludes there is a long whistle.... Easily confused with other whistles, but should be able to find the scheduled practice time conclusion, and it will be very close to then... Once that happens, I go down the stairs in the middle of the grandstands, it's a dead end type of thing, but that's where the players pass through to return to the locker room... Often times players stop there for autographs, but don't expect all...
If practice starts at two, and your father has mobility issues, I would see what time shuttling starts and be there then, maybe around 1.
Best of luck and I hope this helped