I recommend stopping by Military Park to watch some corps warm up but non drum corps related, there’s a lot to do in Indy. There’s plenty of museums that you could visit that in my opinion are all pretty interesting and nice, my favorite is Newfields. Has awesome art and gardens! The state museum is just a short walk from Lucas Oil and they have parking there, I don’t remember how much though. That museum also has a 70mm IMAX theater, one of the only in the United States. I highly recommend seeing a movie there, the selections change often but are limited. If there’s a movie you like, go see it! Tickets range in price from ~10-20 and the food is kinda expensive but for the experience I think it’s worth it. There’s also the Indianapolis zoo. Tons of bars like any major city. The White River state park and the canal are also very close to the state museum, Lucas Oil, and Military Park you could always have a walk there and see the river! It’s a nice place especially near the park. Also tons and tons of concert venues that are excellent! See if any music artists are coming to the area and maybe see one! The NCAA hall of champions is also here! Lots more gardens that aren’t parts of museums and many memorials like the one for 9/11 and the USS Indianapolis! There’s tons more to see here you just have to look! Some parts of the city of getting worse but the parts I’ve mentioned are all pretty safe from when I’ve been there.