Relax. Come on the trip, its paid for!
I skied at Brighton last weekend, while on Utah standards, its low, it really wasn't that bad. I've skied other places in mid winter with less snow. The groomers were fantastic, and the off trail stuff was decent. It was November 17th, pretty early in the season, so I can't complain, I was skiing. While we might be low on snow right now, it will not last. Last year there was only a trace of snow on the Wednesday night before Thanksgiving, then the storm blew in. A record 100 inches in 100 hours fell, making for unreal skiing.
I had dinner/beers with some Maggots last night. Yes, Powder-Maggots. From what I hear, Alta's opener was one of the best in years. There was speak of 6 inches of powder in some places on top of decent snow pack. A great bonus of the warm weather and cold nights that we have been having, as explained to me, is that it has helped to stabilize the snowpack, so if your group is into steeps, maybe more of them will be open. I'm not a snowpack expert, however, I tend to believe what was told to me.
From my experience in Utah, and what was explained to my by a former boss, we tend to have 2 week weather cycles. Nothing for a couple of weeks, then BAM, we get nailed for two. Your a few weeks out, never know whats going to happen, it could be blower conditions!
Look us up when you get out here! Have a great trip.