It was open in late April 2004 if that helps. It's pretty unlikely that it wouldn't be open considering the mass amounts of people that will surely be there during that time.
I hope it will be open right up to the 30th April.
Thats our first day at the Magic Kingdom,and i know that the first thing i will be going on is POTC..
COP recently came up from a rehab and no rumors have been confirmed about updating of the acts. So it should be open and COP lost its seasonal status if I remember correctly about a year and a half ago.