Hi Barry - welcome to the SOC - as far as camping with other Sunline Owners I'd suggest you check out our M&G Section of the forum.
We just had a M&G in Old Forge, New York last weekend - the weather didn't cooperate to well but a fun time was had by all......we had 10 Sunlines and one SOB (some other brand) in our group.
Next June there is a LARGE M&G in PA - it is a distance for you but there you will see all years, makes & models of Sunlines - it is a very organized "rally" with lots to learn and things to do.
Check them out!