Don't do it! It's not worth it by any means...for every 10 appreciative scared people, you'd get 1 to 2 Azzz-holes causing disruption and mayhem, and 1 of those 2 people will likely get hurt by their own means, and sue YOU...not to mention the red tape in your jurisdiction which probably requires outrageous county fees, written plans, electrical inspections, evacuation documentation, fire-retardant coated props, fire code compliance....yikes...what a mess. Sorry to be a gloomy gus, but I've been there and done that...never again!!!