Running the risk of sounding like an asshat (which wouldn't be the first time on these boards lol), I'm not 100% sure what's the issue with Pretty Princess Days? Other than it isn't technically a wedding and people tend to call them that, I'm not really sure what the problem is, because some people do it as a means to celebrate with their families and to get something that maybe they couldn't do when they initially got married. I also understand that some people view it as doing it out of order and just using it as an excuse to dress up and get pretty and show off when if you wanted to do it, you should have done it when you got legally married. Personally, I'm on team "Do You" but eh.
I'm not really defending it, I just don't really get the animosity that there seems to be towards it, or if I'm just reading into stuff incorrectly.