Madison? Are you crazy? Thats a two plus hour drive.
Fox river valley is your best bet. Oshkosh, Fon Du Lac, Appleton, De Pere, etc. And I don't know who you are talking to, but booking for a weekend is not required. Might be for the hotels right by the stadium--but you will find one downtown that will do it.
I would not go any further south than Fon Du Lac and even that is too far.