Is there a picnic area that can be reserved for a large group? Anyone with experience on how good such experience would be?

My daughter held a baby shower there about 7 years ago. The picnic area is covered with a roof, there are rustic bathrooms there, and a small play structure for the kids. It's also right next to Thundergust Lake but not for swimming.

Yes have been to some large family events ie baby shower and Birthdays there. Thought they went well!