One option is to find out of your company (or your spouses ) has a contract with a hotel chain that has a location in Indianapolis . Hilton etc... depending on the wording of the contract they have to honor the contract rate -even during a normal sell out period .
If any of you have a Eli Lily connection you should be able to get that rate even during Gen Con . I know people that did that in 2017 and 2018.