Nite flying?
Well, not quite, but close...
Back in the mid-1970's, in a large mid-Western city, we flew at the truck overflow parking lot of a nice motel in the middle of town. A nearby amusement park made plenty of noise; ours didn't bother anyone... No mufflers even thought of back then!
Mostly full-body stunt models, so the engines weren't screaming, either. Sorta late Summer/early Fall, it tended to get dark in a hurry. Our flights lasted almost 8 minutes. Always tempted to get in "that one last flight."
I had a stunter up one late afternoon. Inverted Fox 35, no muffler, and as it got dark I could see the bright orange of the open exhaust port clearly, No, I didn't do any stunts... There was enough late twilight, and some parking lot lighting, so I could still see the model - sort of - I just kept a steady hand and let it land itself.
Memorable!
But, I doubt we could've got away with a Dynajet (pulse jet) powered model at ANY time there. they are L O U D ! ! !