1. Everybody participating should sit near each other so they can be easily heard. I suggest getting comfy: couches, blankets, pillows.
2. Having treats to munch on is also nice. Popcorn, crackers, maybe a bit of candy....
Indefinite (as long as you want!)
Easy peasy (fun and simple)
Number of Players:
10 to 20
As many as you can handle!
Small (a clearable open space the size of a 1-car garage)