Lucas Oil is a very nice field. Stay out of the NE endzone for the first half as the seats get glare from the bay window in the opposite end zone.
You can also tailgate in the streets if you like. I went six years ago maybe and they never repealed open containers after hosting the Superbowl.
If you plan to fly in, don't bother renting a car. Everything is within walking distance. Ditto for Jet City.