By all means stay in the park if at all possible and stay in or around Cody at least two evenings. It took us two full days to see the museum. Well worth it. We also enjoyed the Big Horn Mountains although the motor home didn't like the uphill grade in 97degree weather. Only time it has over heated. We entered from the south and stayed at the Bridge Bay campground. We are not hikers, but it took us two full days just to drive around the park and see the touristy sites. Don't cut your stay short.