Yes. However, please talk to the bride and groom to make sure it is ok first. There is a kids room available at the venue with games and TV available as well as a a sitter.
Casual to semi-formal. We really don't care what you wear, just be smart about it.
YES. Please be sure to drink plenty of water to help offset getting altitude sickness. It is dry here (if you're coming from WI, so bring plenty of lotion and drink lots of water). Signs of altitude sickness: nausea, headache, and light headed. (Due to lower oxygen levels)
YES. Lower oxygen is in your blood so the alcohol hits you faster here. Rule of thumb: 1 water to every 1 drink