As some of you know, my timeshare at Snowbird is the week after the Gathering. I'm not sure we will arrive at the beginning of the Gathering, depends upon how much catching up at home is needed after my Canadian trip ending a few days before the Gathering.
I guided a day at Snowbird at the 2014 Gathering and should be available for Wednesday and Friday (not Saturday as I will probably be a at Alta with local friends) of this one. I have 50 days lifetime at Alta, could do Thursday there too. I guided Whistler 2 days last year but in Alta's case maybe there are already enough guides with as much experience as mine.
With regard to cell service I have ATT. My cell does not work in Mineral Basin and the lower 2/3 of Little Cloud. At Alta Alf's Restaurant is in the small but inconvenient dead cell zone.
Uncle Louie is right about lunch meetings at Alta/Bird. The Whistler restaurants were massive and easily absorbed all of us but there are no places like that at Alta or Snowbird. I find Mid-Gad at Snowbird slow and annoying. Avoid it even with modest size ski groups. The new Hidden Peak restaurant at the top of Snowbird I like, but most of our Iron Blosam group won't go there because they don't allow brown-bagging. Rendezvous on the second floor of the tram plaza I like. It will handle a ski group or two but not all of us. If weather is warm you can get various take outs and eat outside on the tram plaza, as often occurs during my timeshare weeks. Let's hope for different weather for the Gathering!
Watson's and Alf's are both decent for lunch, but again only for a couple of groups at a time, too small for everyone. Don't forget the lodges at Alta. If you want a very nice sit down lunch, try the Rustler Lodge, served by a short chairlift loading near the middle of the rope tow. Goldminer's is of course convenient for lunch too.