Here is one lot that might be appealing. It is $10 and like others have said it's a 1 mile walk to stadium.
Note some of the rules like no charcoal or glass
East River Flats Parking Lot
360 East River Road
Minneapolis, MN 55455
Automobiles, $10
Open 8am-10pm
East River Flats is a Minneapolis City Park, located along the banks of the Mississippi River along the edge of campus.
Tailgating is permitted in East River Flats. Rules:
•Tailgating may begin six hours before game time, but no earlier than 8am.
•Tailgating must end four hours after game time or 11pm, whichever comes first.
•All vehicles must leave at 11 p.m.
I got a ticket because I left my car there during the hockey game at night and got back to it around 10 PM. I appealed to the city and got it waived but kinda a PITA. Anyway, might be worth moving it if you are sober enough and plan on sticking around campus for a while.
•Green space within the parking lot or other designated surfaces may be used for tailgating.
•Tailgating is NOT permitted on any other Minneapolis Park and Recreation Board property unless authorized.
•Illegal parking will be strictly enforced. Violators will be subject to tagging and towing at the owner’s expense.
•No saving parking spaces.
Don't worry about it. It's never packed
•Gas grills must not exceed a propane cylinder size of 20 pounds.
•Open charcoal or wood fires are not permitted.
•Tents and awnings must not block adjacent parking spaces or drive aisle. No stakes allowed.
•Portable generators are permitted.
•Kegs and other common source alcohol containers are not permitted.
•No glass containers are permitted in the park
We've brought hard alcohol and just left it in the trunk, back of the SUV or in a cooler.