Inspired by another thread about what age you let your kids go to the park alone. Several posts it sounds like the park is very close, which means kids can play alone at an earlier age.
We live in the centre of a market town, we have 3 parks but they are all 20 minutes walk, with some main roads. I can't imagine letting the kids go alone until maybe the summer before senior school. They would need to have some street sense. And maybe a phone.
So, how close is your park?!