Bitterroot Valley RV Park and Campground is about halfway between Hamilton and Darby. They have short and long term RV parking facilities and tent campsites.
There are numerous US Forest Service campgrounds nearby in the Bitterroot National Forest. Consult their website and maps for locations, but the nearest ones to the Games would be under the Stevensville and Darby areas.
Angler's Roost just south of Hamilton has short and long term RV parking facilities as well as spaces for tent camping and hostelry type accommodations.
Black Rabbit RV Park in Hamilton has short and long term RV parking facilities as well as spaces for tent camping.
Overnight camping is not permitted on the grounds of the Daly Mansion, but there are several options for camping nearby. The locations listed below are all within 20-45 minutes of the location of the Games. Note that the Bitterroot Celtic Games & Gathering has no relationship with these businesses, and we list them here solely for your convenience in searching for accommodations.
Bitterroot Celtic Games & Gathering
PO Box 1774 Hamilton MT 59840 US
A 501(c)(3) non-profit # 46-5321460