while I'm outside if I want to participate in the activity of Recreational eating I can simply stop by a restaurant or a fast food place like McDonald's.
Compare this to participating in a recreational activity in a park. Unless the park has a piece of fixed equipment you're interested in you have to bring the equipment from home.
outdoor eating as a recreation is far more convenient an outdoor active Recreation.
here's examples of how to put recreation in the park on a more even level with recreational outdoors eating