With all dur respect, HQ, 15 minutes does seem a very short time for a Halloween party. I like mine to last at least 2 hours. In fact, I plan to have mine from 8:00 until around midnight, and then go for a motorcycle ride when my guests leave. If my nephew brings his youngest along, then it might have to break up around 10, but I am still going to keep the party going until midnight even if I'm alone. I plan to roast hot dogs in the fire place, and I plan to go for my Halloween night motorcycle ride weather permitting.
If we get snow fluries, however, I will probably forgo the motorcycle ride.