I also have booked a Frozen themed inside deluxe, I've seen pictures and looks perfect for us. I do wish that they kept the magic portholes from some of the other ships, but that's not a huge issue for us.
Oh bummer about lack of adults only trivia, I enjoy those but I think this ship is really focusing on families and a lot of Asian families really do almost everything together, so they really aren't into dropping kids off at the club and doing things without the kids so can see why they are more focused on the entire family with the entertainment and offerings, but maybe as they see more adults asking for adults only options they may (hopefully) add some more in the future - the lack of adults only pool isn't a bother for me, If I'm at the pool it's with my kids so never used the adults only areas really anyway.