Minnie&Mickey -- i'm sure your girls will like the non-stop activities....i know my daughter would....when we were on the wonder in july, it really bothered her (and me for that matter) that the ship seems to go to sleep at midnight or so.....
i mean, why don't they even show movies in the theatre in the middle of the night....i would go....
my son, who is 17, had a good time staying out all night with the other teens, but my daugther was left with nothing to do...and in fact, when there were activities there wasn't really anything for her to do....she's 20....she would have loved to have a disco to go to where people actually dance...on the wonder, except for the half hour the cruise staff is there, no one ever dances (at least not on the two cruises we were on)...everyone just sits around listening to the music....how boring is that????....
in the carnival commercials they show people actually dancing....then again, maybe that's just the commercials....
but i'm sure you'll have a good time....it's always fun to do something new....
i've spent today reading up and i think we might try the celebrity millenium next summer.....depending if we can work out the timing...