Can a few people come and find a place to play bluegrass music?

You'll have to ask the man who runs the place. Probably, as long as you don't disturb the other campers.

I only saw the campgrounds and a boat ramp there. There might be more to it though.

Yes but not late

Yes

I don't see why not. It's a camp I believe they lock the gate at 10:00 pm.

I believe so theres electric. And restroom facilities and plenty of room.

When you coming back

Thanks for all the response to bluegrass music at Arbuckle camp . You may be hearing from us soon!