First Trip to WDW
Hello, Moonchild...
Did you post a trip report from your first trip to WDW...If so, I must have missed it, but since you booked a cruise, well, I guess you are hooked!
I would love to take the cruise but haven't looked into it, so far.
As far as dress attire, consult the booking agent, who should be sending you some sort of "Things To know" about your cruise... That should let you know what to expect on this cruise.
Usually, you can dress casually, but they may require coat and tie for the gentlemen at dinner...something like that, or they may have one "Formal Dinner" at which folks will really dress up...