clean up your course/park

The other day, my friend John and I were shooting a round when he mentioned the idea of a clean up your course/park day. A bunch a people, disc golfers and non players would descend on their local park to give it a good going over. Spend the morning cleaning up, have a lunch, then play in the afternoon. It would be a great way to get your local park looking good and get others to play disc golf.
What do you think? Can we do something like this?