Sticker goes on your windshield; no check-in required at most parks (though some busy parks still use an entry booth).
Buy your pass in January or February for the upcoming season (valid through December 31 of that year). If you buy in November, you’re only getting a month or two of use. wisconsin annual state park pass
If you live in Wisconsin or visit regularly, just buy it. If you’re a non-resident planning 2+ park days on one trip, it still saves money. Sticker goes on your windshield; no check-in required
Even if you lose your vehicle or move away mid-year, the pass is non-refundable. Sticker goes on your windshield