Bloody hell. What happened to simple pleasures? In Canada, an outdoor ice rink in the summer is... well, a pond, and maybe someone to resurface it if it gets weird. Or an out of the way parking lot and some hoses, and someone to resurface it once in a while.
In the US, pick any open field, play pickup football, cook meat, drink beer. Make the kids race each other. Toss a frisbee, throw water balloons, whatever, shit's cheap yo.