Will be there with my wife and it is her first Bills game in Buffalo - we did go to a Chargers game a few years back and a Rams game years ago(Joe Ferguson went over 25,000 yards in his career during that game).
My cousin used to set up in the same spot every game but with the new parking policy, that will be next to impossible - they are directing you into your spot and you will not be able to have an empty spot between cars - so who knows where you will end up.
If you find someone your best bet is to get their cell number and find out where they are when you get there. That is what I am doing with my cousins.
If you have a cooler of beer and some chips, I find it hard to believe you won't be welcome just about anywhere - so I would follow the advice of going there and finding a good party and join in. I am bringing Yuenglings or Labatts Blue - I am sure if I don't park close to family I will crash another tailgate
Looking forward to 2013:
Manuel - most upside in the draft
Woods - most pro ready WR
Alonso - tall ILB with coverage skills
Goodwin - fastest WR in draft
Duke Williams - prince of a pick
Meeks - no he is not
Hopkins - best K prospect in the draft
Gragg - vertical threat TE
Go ahead and complain - I am happy with this draft
Adopt a Bill - first choice Alonso, second Goodwin