Tailgating In Houston for the Texans Game

Questions: First, if it rains, what's the plan? I'm not a tailgating regular, so I'm not sure what plan B would be...

Second, I'm estimating now between 40-50 people; how much of each thing should I buy? Again, I'm a tailgating novice who is happy to shop if given a very specific list...so if we don't want 2 burgers, 80 hotdogs and only two dozen buns, then let me know what to get. :D

Paid so far (updated 11am Friday 11/16):

• primadox/tenordas (2, plus another 2 who will bring corresponding amount of beer, maybe Abita, or other goodies as needed from New Orleans)
• JayFoster (paid for parking pass)
• skymike/kaseimo(2)
• SnowDale (2)
• Tazman (2)
• HoustonSaint68 (2)
• Andrus (2)
• DallasRene (2)
• HouYat (2) - payment made via promise to pick up corresponding amount of beer
• SaintMike (10)
• voodooman (2)
• Optimusaint (2)
• WillDownload (2)
• jahsoul (4)

the grocery list:
Beer. Tell me what kinds, amounts, etc.
Soda. Ditto. I like Coke and Barq's.
ICE
Burger patties
cheese for burgers
hot dogs
maybe some precooked sliced brisket?
appropriate buns for the above meat items
condiments: ketchup, mustard, mayo, etc.
assortment packs of chips
maybe some salsa/dips?
pork & beans -- SaintMike, you said you have a small pot to cook this on, right?
plates
napkins
plastic spoons/knives

I'll bring some extra chairs as well, and I will do what it takes to get my grill there, and let's hope I have enough propane...:) I'm bringing some coolers, and some have volunteered theirs; I guess we'll ice down what we can that morning for the late arriving coolers?

Am I missing anything besides my sanity, LOL? Of course, that's been gone for a long, long time....;)