Call and ask what time the day campers are skating - it's usually only an hour or so. I'm not sure if they skate every day or every other day or if there's a different camp age group each day - I dunno. They're nice kids, but they're loud and proud. I will say they're respectful and well-supervised.
Unless there's a birthday party or outside camp, the free skate rental won't be much of a draw. There may be some of the blue plastic skates left in skate rental, but most of the stock in adult sizes consist of soft-skates. No adult leather skates that I know of.