Benji,
You don't have to be a member.It will cost a little more $ not being a member,but it is not required to participate.I would recommend you think about becoming a member of the SCBA tho....help us keep archery around.
We usually have a range set up for practice,or just shooting.A few fun shoots,like pop up/lay down ground hogs,ect.A 30 target 3D shoot,through the woods,or basically down grass roads/fire lanes........good realistic shooting scenarios.Lots of BSing.
Not sure about reserving a site,but I'm sure it wouldn't hurt,we're usually way towards the back of the campground.If you ask the owner they'll know where to set you up.
Come on down and meet some of us.....