Horizonjet, the day use area is right next to Big River Inn where most of us will be staying.
Some will be staying in Parker at the Motel 6 etc. approx. 10 - 15 minutes away.
Couple of hang outs up river, one at a sandbar and one other at a cove near the dam by the
bridge crossing over into Parker.
Good gas and consumables ( beer ) in Parker.
Nite time entertainment within walking distance of the Inn.

The Big River Inn and day beach ( launch ramp ) are just down river from Big River RV Park.
Hope that helps, check Google maps and you'll see everything except maybe the sandbar.
What day might you guys be showing up for the weekend ?