Replying to Advice for whistler

Soooooo I just recently recieved some of the greatest news of my life. My dad told me we are going to whistler over christmas vacation. Now I am 19 and have been skiing forever, and I have never skied anywhere outside of new england. the most powder I have ever hit is 6 inches on a closed lift trail at sugarbush. My number one goal is to slash some pow so i need some advice as to where to go or what to do because I have no idea where to begin. Will whistler have much snow around christmas? what are the best areas? i want some serious insider info.