Maybe it is opened on an as needed basis?? We visited OKW mid week and the quiet pools were not crowded at all. The main pool was hopping though. We had a little one with us, who absolutely loved the new pool slide.
It was open when we were there the first week in May. And they had sandwiches-tuna salad. At that time, they said they didn't have a grill, so they couldn't do hamburgers or hot dogs. But DH bought lunch there.