Yes you could, We were able to get so much out of our one day. We were on a 7:30am bus, We did all 4 parks. MK- Carousel, Small World, Seven Dwarfs Mine Train with FP #1, Haunted Mansion, Hubby did Pirates while the ladies sat and enjoyed a dole whip and Mickey pretzel. Then on to park 2- Epcot where we rode Spaceship Earth, Soarin with FP#2, Frozen with FP #3 ate lunch from food and wine festival booths and shopped in Japan, next park was Hollywood studios where we rode Toy story and the kids and hubby did Star Tours. Last was Animal Kingdom where we rode the safari at dusk with no wait then hung out and watched the performers in Africa before catching a bus back to the ship, I think about 7:30. We went back to the ship and had dinner up at the buffet which was open most of the evening for those coming in from touring the parks. (I think we ate dinner about 9).