Kids are welcome! The party Friday night at the brewery is family friendly and the wedding/reception venue is as well. The Mangy moose after party is the only 21 and over event.
I would plan on regular wedding attire modified to be warmer! Bring your hats, gloves and coats for the gondola ride up and then take it all off for dinner, dancing and drinks!
Absolutely not! You are welcome to stay wherever you want--Jackson Hole has plenty of hotels right downtown! The Cowboy Village Resort is the only place where you get a discount though!