Depending when you go (holidays or over a weekend) the 2000 loop can be party central.
Large groups come in and take over multiple sites. They will use one site just for a kitchen set up with 3 or 4 EZ Ups and multiple tables.
They let the kids run wild.
But saying that, last time we were in 1500, a scout group took over 3 sites across the street from us. Multiple cars and utility trailers on the sites along with a camp kitchen.
They set up maybe 10 - 15 tents along the canal behind the sites. Must've been about 50 people, but they were pretty quiet and well behaved.