You know how much those tickets are gonna be, right? lol... and booking the hotels should be done asap, many are sold out already. I would say you are looking at a $3000 dollar excursion at least!
I am from Indy! (actually 15 minutes west) But anyhow... Colts game will be a lot of fun! It depends on how much you are wanting to spend.
Dinner in Indy:
-St. Elmos (expensive steakhouse but a cool experience)
-Buca di Beppo (italian... little greasy but good)
-Ruth's Chris Steakhouse (again VERY expensive)
-Rathskeller (German bar... cool experience... usually have entertainment)
-Shula's (Another steakhouse, very fine dining (expensive)... dress up for this place)
-The Melting Pot
Of course there are a lot of other cheaper places to eat like
-Hard Rock Cafe
-Spaghetti Factory (good authentic italian)
-Jillians (this is a cool restaurant with bowling and pool on a different level
http://www.jilliansindianapolis.com/)
-Alcatraz Brewing company
-Rock Bottom
Things to do in Indy:
-walk the canal (pretty, maybe a little cold, but a pretty place)
-Crackers (this is a comedy club, I've loved it everytime I go... but just know if you go to a later show, smoking is allowed and its pretty bad)
-Jillians (the restaurant, has live music saturdays with a 5 dollar cover)
-
Hotels:
-again, depends on your budget. A luxury hotel is the Canterbury, its about 250 a night for a deluxe queen suite. This is upscale though (can arrange for in room massages, valet parking, you get terry robes, turn down service, the works)
-The Adam's Mark in downtown indy is a nicer one (about 239.00 a night) It's a Hliton
Those are just the really nice ones (I know the Hyatt Regency is already sold out) I'm not a good person to ask about hotels because I never had to stay in one in Indy, lol
I hope you are able to book everything you need to... This is all I know about Indy. LOL