Are there usually a lot of people playing airsoft or is it just mostly paint ball and if you show up with airsoft guns they just let you screw around on another field by yourself????

Lots of airsoft, very regular and reliable player base. No you cannot just run around in a field by yourself, but they do have a target range for calibrating your gun. Patricia is right on all accounts.

Yes there is a lot. Kids and adults. The place is run well with a guide to walk people to the fields. Lots of tables to lay out weapons and gear. Places to sit. People I met there are always nice. They were helpful to my son.