Very excited to hear how you enjoy the day once you get back! It looks like they have a good variety of activities. Trivia, drawing, speakers, music, etc.
I personally was hoping for some additional character opportunities. Looks like if you aren't able to reserve time with Groot or the New York Characters you have 4 characters to meet around the ship. Captain America, Thor, Loki and Black Widow.
Also I'm excited to hear how the Deck show is. From the Disney Parks Blog description two days ago it sounds really cool!