Lots of people on the thread but no one throwing out dates or places...
I'll take the leap...
Does Saturday afternoon work? It looks like gorgeous weather for the weekend. Maybe we could find a park and hang out. It would be great if we can find a place that had plenty to do (like a riding/walking trail, volleyball courts, jungle gym if people have kids, etc. Peace Valley Park in Doylestown is great (6 mile loop around a lake)...but no volleyball that I know of. What does Valley Forge Park have?
Perhaps everyone could bring a dish to share. BYO drinks and meat (assuming someone has a small grill they can bring)??