I'll have to respectfully disagree with Johde. Carbo loading is quite proven and still used by all elite runners I know.
On timing, it is best to finish you last meal relatively early. I'm eating at 5:00 on Saturday and then probably won't eat much after that, except maybe grazing a bit.
It is also better to graze all day Saturday, than to have one big pasta meal. If I were at the parks, I would probably have a standard pasta plate at some point and maybe a cheese or veggie (low-ish fat) pizza another time. Both these are decent sources, and don't laugh at the pizza, I got the tip from a report from some Kenyans that they like non-sausage pizza before races. I set a PR once on pizza for dinner. Pretzels (big soft) wouldn't be bad either. Pizza places in both parks have both pasta and pizza I believe.
I would avoid anything with a lot of fat (cheesburgers, hot dogs, french fries, fried anything). I also keep the protein low because I don't really need it for the race, and I'll get plenty after the race.
At least as important is carrying water with you on Saturday. Keep hydrated all day.
Post race is easy. Here is my formula: 1) I snack on the food after the race, but don't eat big until 11-noon; 2) Monte Cristo Sandwich; 3) Karl Strauss Red Trolley; 4) Dole Pineapple Whip. This is definitely a winning formula.