Mysterest

Hi. My wife and I are headed down to DW at the end of April. We will be getting the 4 park pass. I was wondering if the experienced park goers can tell me which parks will take the most time. I would think that MK and Epcot will be our longest days and that AK and DS will not take as much . We are staying in FW, so we plan on coming back each afternoon at some point to have lunch and walk the dog, then go back to the park