Watch a couple
youtube videos ofd the xmas party and see what you think. Although some videos are going to be heavy on things like special treats at the p[arty - which you may not care about. The parade and fireworks are special - and the atmosphere is special. I doubt anyone really cares about the free cookies as they are not anything special. ( we take them, but if we missed them i wouldnt care) If I had $400 extra per person budgeted for special events - I would probably do the xmas party and then some genie + and lightening lanes spread across my park days. OR what i actually have planned is that we are going to the magic kingdom xmas party, the
jollywood nights party at hollywood studios and an epcot day and probably will do a lightening lane for one of my daughters who will want to do guardians. Not sure if we will do genie plus, or just rope drop a couple of the other rides