I will also add that Thanksgiving floats between the 46th and 47th week of the year. So your week is static (counting Sundays from the beginning of the year), not relative to Thanksgiving; so depending on if you bought 48 or 47 you could actually be covering Thanksgiving week or 2 weeks after some years and the other years be 1 week after. 75% of the time Thanksgiving is week 47 though. It was odd if you bought week 47 for GW you could get Thanksgiving 75% of the time cheaper (by a fair margin) because
DVC actually didn't realize this when they set the GW charts so the year they created them Thanksgiving was week 46 thus that GW was more money and week 47 (the more prominent week) was less money (for usually using more than the 10% buffer points you bought, actually DVC has to cover any shortage over that 10%). Now for Riviera it is the opposite 47 is more points and 46 is less, since Thanksgiving was week 47 when they created those charts.
The only dynamic weeks that were sold for CCV (and stopped with Riviera) was for the race weekends (3 of them, Marathon, Star Wars, and Food/Wine). I tried hard to get a week always pegged to Thanksgiving and my question went all the way to the top and even there they thought Thanksgiving always occurred in the same static week. I was assured by week 46 and I would always get Thanksgiving Week until I pointed this out and they told me not to buy under the assumption I would always have Thanksgiving.