I don't know that it really will. Many, maybe even most, people won't even know there are these cuts until they get there and there are no fireworks, no costumes, etc... We here know about it because we all talk and scrounge around for info, but the general population of Disney guests are not necessarily on this (or other) board. We make up a very small percentage of visitors to
Disneyland.
Last year I ran into quite a few people who were terribly upset that the parks were closing early for the party. I was thinking to myself, "how could you NOT know about this?" But, really, if they don't search out the info, they won't know. There may well be a lot of people who go on and purchase the party tickets without even reading the description, just assuming it will be the same as last year. I think that this is what Disney counts on when they make the changes, figuring the tickets will sell anyway...