WDW relies on tourists, who will show up anyways (No way Disney World will be dead at Christmas). DL, on the other hand, relies on locals. And locals with annual passes. And even though Disney keeps jacking the price, people (bless them) keep buying them. But I imagine there will be a large number whose renewals will come up and they'll wait till January. That means drop off in July, August, September, October, November and December.