Hello Rosa, As far as I know Cabin John park is open to public. I have seen family with kids and some camp counselor with kids. If you intend to see the picnic table for a large group of people ,I think you need to make a reservation. If you decide to take the children, they will definitely like it there. They have a train ride that goes around the park..it will be fun filled day trip. I hope it help. Stay Bless and Safe!
I agree with the others, the only reason we had a reservation cause we booked an area for our church. 😊
You don't need a reservation to go the park bur if you are having a special event such as a party or cookout and need to use the pavilion, then you will need to do a reservation.
Thanks! Your answer is awaiting moderation.