Delmarva Sporting Clays on MD's eastern shore.
Great handgun and rifle ranges out to 300 yards.
You bring it, you shoot it, you clean it up.
Food items should be done only in cold weather for obvious reasons....andthe flies there will KILL you in the hot months anyway.
http://www.dscfff.com/serv02.htm
We hold 2 or 3 BIG events there every year with up to about 125 people, but they aren't normally busy at all.
Search youtube for "mdshooters" and "delmarva" and see what you get.