FYI, there are a few rooms available, as of this morning, at the Hilltop Motel, in Montello,WI, about 45 miles from AirVenture. Yes it's a bit of a drive, but the rooms are @ $60 a nite. It's a small old fashioned type motel, small rooms but clean, A/C and a TV, microwave and small fridge.

Hilltop Motel
131Church ST
Montello

608-297-2090
131hilltopmotel@gmail.com