P.S. It would also help if the hotel was located somewhere near Maryland.
Willa
check hotels.com i don’t think i’ve ever seen anything like Great Wolf, however I have seen others with waterparks and fun stuff. Where I live we have a Great wolf and an Americana which has a waterpark. Check that site, or try expedia.com or travelocity. You may find them that way. OR tripadvisor.com might have something.
Good luck