Possible? Yes. Difficult? Usually. Of the two, Copper Creek is more likely to be the hardest to get during the first week of Dec as it a) is new; b) is at arguably the hardest place to book during the holidays; c) increasing crowds due to purposeful Disney planning; and d) studios are the cheapest point-wise. That being said, it's not impossible. Be prepared for a waitlist for Copper Creek. AKV has also seen an uptick in reservations but is generally considered an easier "get" due to its size. You my already know this, but always book your home resort first to ensure you have a place to stay. Then, at 7 months, right at the time when online (or member services opens), be ready to book. Online booking does show what's available at the time when you're trying to reserve, but some people prefer dealing with a live person. Online booking opens earlier and if the rooms are available, you can most definitely use that.
Edit: HA! KAT beat me to it!