The Adrenaline park is usually in tip top shape come late January (note however that you'll need a park pass to get in). There are also some beginner and intermediate features that won't require a pass to access.
Conditions are all over the place dependent on weather and crowds. Sometimes the top of the mountain is shrouded in clouds and you can't see 5 feet in front of you. On the other hand some days you get to the edge chair the morning after a snowfall and you could get some acceptable fresh. Some nice groomers and some decent EC trees also.
Always use the singles line.
I always stay away from the gondola, but that's just me.
Lift tickets are expensive.
There is some good nightlife in the village and good apres ski beer deals. My recommendation is to go shred, grab beers at caribou, get loaded, eat, recharge, get back out on the town and go crazy. Then rinse wash repeat the next day.