depends on where you are coming from/going to after the game. I live in Cheektowaga/West Seneca area, so I park in Drive 5. I like to be close to the stadium and not have to walk as far. If I park in Hammers lot or the Big Tree side, it takes forever to get home.
So, it really depends on you. Same with when to get there. If you want to get there at 9 and party all day, that's good. If you only want to tailgate for a little while and head in, then you should come later.