I have strong issues with Disney planning to only do the holiday parade for people who pay for special after hours ticketed events. The park has been doing Christmas parades since the 1950's. This is a special tradition that people who go to the park in December expect to see. Many plan there trip specifically for this time of year because of this parade. I know my family always did. Many people are going to show up in December only to see Soundsational next year, and be very very upset. Not that Soundsational isn't a great parade, but again, people who have been going to the park as an annual tradition for decades and decades are going to be very very upset to see a non-Christmas parade coming down Main Street. Disney is opening up the flood gates for a lot of angry guests.
I have no issue with Disney holding special parties during the holidays - But I think the focus should be on EXTRAS - not taking away stuff from the regular daytime guests. It is almost as though they are holding the parade hostage, and you will never see your little precious parade again unless you shell out 100.00 clams. (Getting very film noir here)
I think they could just plan to do the holiday fireworks for party guests only (it is a more recent offering, and guest do not expect it as much) And continue the parade for day guests. Between the fireworks and Candlelight processional, that is enough to get people to attend the special events. They don't have to take the parade away from day guests. It is not necessary, and is just plain scrooge-like behavior.