Shortly after I retired in 1998, I headed for MB. By myself. I stayed at one of the big three CGs (I don't remember which one). They asked me if I wanted to be near the beach (I didn't) so they assigned me one back about half way. It was a bigger site and paved, unlike the beachfront sites. A couple of years later, I returned and stayed at Willow Tree, on the N.C./S.C. border and about 12 miles from the beach. Even better. The sites were huge, and many had their own hot tub.
Those folks just didn't do their homework. I don't mind kids running around. Its their job. But if you don't like kids running around, don't go to a popular beach area when school is out for the summer.