Well, I had a great time at Massanutten on MLK Day. Was skiing with a couple friends, which included a couple of tweens. Snowguns were on all day, but we had all the necessary gear for staying warm and dry. As expected, lines for Lift 5 and Lift 6 never got bad. Because it's a timeshare resort, few people who stayed for just the weekend ski/board on Monday. They have to check out by 10am, often just go tubing and then drive home. Not even holiday rates for that Monday.
Never a line for Lift 6 to the summit at Mnut, even midday on Sat or Sun of a holiday weekend. It loads mid-mountain. The Mid-Mountain Grill is open on weekends. Grill is run by parent volunteers of Mnut ski/board teams. No indoor seating, but can be good on a warmish day. As long as a porta-potty is good enough, there is no need to go back to the base until ready for a longer break.