Is this a good place to have a family picnic. ?And how much would i have to pay?

Great place for family picnics, you have to reserve the shelters but not the picnic tables. I'd get there early, they go fast on the weekends. Shelters vary in cost based on size and utilities

Hi Lea. Bull Run Regional Park is a GREAT place for family picnics. As Keith kindly mentioned, we have many picnic tables available. You can also rent our larger shelters. For more information on our picnic shelters please visit: https://www.novaparks.com/parks/bull-run-regional-park/things-to-do/picnic-shelters-picnic We hope you have a wonderful family picnic at our park!

How much for the water park ? :)

Fun place to picnic with family. Lots of open space, grills and playground. Also a small water park. No fee to enter during summer except for the water park.