Schools in your area get a whole week off in conjunction with President's Day? That's unusual to me since it's more common to have just that day off.
Crown Princess is a fairly new ship and was refurbished in the fall of 2011. There are lots of things to do aboard, and I personally think Princess has the best Italian food of any mainstream cruise line sailing from U.S. ports. Their pizza is excellent. The dates back to the company acquiring the old Sitmar line which was known for it's excellent cuisine and gracious Italian staff. Thus, you will likely still see many Italian crew working the restaurants. I also like that the ship has an aft pool and movies under the stars by the main pool.
I am cruising the same itinerary this coming fall aboard Ruby Princess. It's the classic "love boat" run during Princess Cruises 50th anniversary celebration this year. Keep that in mind because the line is doing special anniversary things on all cruises this year. Look for classic dishes being served in the main dining room as special menu items