On site hotels and entertainment

Are you a frequent goer? Stay at the resorts often? Then this inquiry is for you. This time around, our 1.5 year old will be coming along as are his grandparents (built-in babysitting for when mom & dad go to HHN). Aside from pools and splash pads, does any on site hotel offer more fun for little ones? Ball pit, playground, etc. Is a walk or water Taxi to City Walk the only other option apart from letting play in the room?