Bob,
As Mark Pointed out, there are a whole lot of people, groups and clubs that occupy the campsites during the Memorial Day Weekend. Many are nice, and many are not so nice. Rolling Thunder brings in over 50,000 bikes and their riders during that weekend. I think that is what he is talking about. Camping is the best solution for our reunion, if you don't have to put up with the biker crowd, the Memorial Day Festivities, and party people.
Dave