I've never been to DL during the holidays, so I want to make a quick trip this year to do it. I obviously know either weekend will be packed, but is there one I should pick over the other? For some reason the resort hotels list the 15th as being cheaper than any other Saturday during the holiday period. (Both AP and regular rates.) And TouringPlans.com lists that weekend as being a few levels lighter. Is there something I'm not aware of that is (or isn't, rather) happening then?