I don't know much about the separate ticket events. They have offered special ticket events for some time with Halloween, Christmas, and Party for the Senses during the Food and Wine Festival. I think it's a way to be able to offer an event that needs limited attendance or has costs that far exceed what would normally be incurred with your normal ticket. I don't have a problem with those being offered now since I don't HAVE to go every time I visit WDW. When I do, I know that I'm with a smaller number of people, and that what I attend will be out of the ordinary.