We've been getting the craving for a good solid vacation lately. Haven't you? April Fool's Day descends upon us on the morrow, and we would rather be parasailing. We don't even know how to parasail. But we'd learn, if it meant some time off, sleeping late, swimming, and just generally getting back, even for one moment, that classic elementary school feeling that, for the next few months, we don't have sh%t to do. PHILADELPHIA......