A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,417
I would guess that if you call some of the airport hotels they might agree to let you book a room on points and then pay for a certain number of additional days of parking.
AFAIK all of the MSP area airport hotels with airport shuttle service don't charge additional for the shuttle (although tips are appreciated, especially if the driver helps with luggage).