We have not gone camping on the big holiday weekends for a number of years with the exception of labor day. Our kids (grown now) can go on the holiday weekends, not so much on the other times so we cave and join the crowds on Labor Day.
We had some issues, such as gas part of water heater stopped working (electric side okay so generator ran to heat water), electric tongue jack decided to not work (but hand crank was still working)...
We had some neighbor campers that had horn honk randomly on their truck (all day and night). Second day, went over and asked if they needed help since they were honking horn.. turned out to be new truck with alarm gremlin. They changed something and we got quiet times then.
We had neighbors on other side that had 15-18 kids spread over 3 sites, happy sounds mostly and they shared their corn on the cob that was perfect.
All in all, great weekend.