The time frame you mention is during the school year, so I would not think, there would be many kids, despite the offers given to locals.
I was on the old Westerdam, and the Zuiderdam in 2005, and I must admit these ships were like ghost ships at night. Way to quiet for me, and if you are used to more action and options, I would suggest sticking with RCI, or see if a Celebrity ship is sailing then.
Let us know what you decide.
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