well.....ItsAGS has done a LOT of footwork apparently every good campground under 6500 feet is closed on the primary weekend. Grounds over 7k feet will be COLD AS BALLS and may require traversing in snow.
I am calling Plumas NF and the Feather River Ranger Dist. tomorrow AM to determine what grounds will be open.
I should know more then and will post our event location by Thursday afternoon.