I just booked a few nights at Universal for the week before Christmas. We'll probably be in the parks Monday and Tuesday (12/19-20) and possibly part of Sunday as well. How bad should I expect it to be? We were there the week before Christmas a few years ago and I don't remember it being terrible (we had Express Passes), but a lot has changed since then (including WWoHP at US). Any advice with respect to a trip at that time of year?