It has been a long time since I have played or even thought about D&D, in fact about 20 years ago when I was a Boy Scout myself and D&D was a new game. Most of our troop played during free time on troop level campouts by candle light, and it was also played every PLC meeting (held at a scouts house) after business was taken care of, usually an all night or weekend game.
I think that like most things it could be abused, at which point you deal with the behavior, until then have fun.