It’s late summer, and we all know what that means: It’s RV-cruisin’ season. Grown-ups can pay $8 to see dozens of the latest and greatest models of recreational vehicles on display at Expo Square this weekend. Kids 12 and under get in free. Friday hours are noon-9 p.m.; Saturday, 10 a.m.-9 p.m.; Sunday, noon-6 p.m.