Flight
Flight options include the following airports: GFK - Grand Forks. Closest to the venue, but more expensive flights, generally. Information on ground transportation from the airport can be found here: https://gfkairport.com/ground-transportation/ FAR - Fargo. 70 miles south of Grand Forks via interstate. It's a quick drive at 80mph, but would necessitate a car rental (around $120/day), Uber (around $110), train (one train at 4am daily, around $25 per ticket), or bus (around $50 per ticket).
Train
Grand Forks has an Amtrak station if you prefer to travel by train. We're on the Empire Builder line from Chicago to Seattle/Portland.
Hotel
Any hotel in Grand Forks should be just fine! We'll arrange transportation from the state park back to town in the evening so no one has to drive.
Hotel
If you're into camping, there are tent spots, RV spots, and some limited cabins available for reservation. Reservations can be made 95 days in advance.