If the weather holds over the weekend, you're bound to run into a ton of people down at Turnagain. Assuming you're still somewhat green, you'll probably want to stick to the flat areas North and South of the parking lot and given the avalanche conditions, will want to stay away from the steep slopes.
I'll be camping down there with my wife and kids this weekend (2008 Dark Red/Maroon GMC Sierra 3500 with a Raptor 5th wheel). Since the kids will be with us, we probably won't venture too far from the parking lot, but you're more than welcome to stop by and I can at least give you some pointers on where to play and what to watch out for. My buddy and I may break away from the Wife and kid for an hour or two and go do some adult playing so you're welcome to tag along if that happens.