Hi, Maria!
Wow! Those are two great resorts that you will be staying at. Double the Disney fun!
On your check-out day from
Disney's Art of Animation, pack your bags and drop them at luggage services. Let them know you need your bags moved to your new "home" at
Disney's Polynesian Village Resort. They will have your bags transferred. You may not see your luggage for several hours, so make sure to keep any necessities with you.
You can then enjoy your day, using
Disney transportation to the theme parks, Disney Springs, or whatever your plans are. Your room at the Polynesian will be
ready for you by 3pm, but maybe sooner. At that point, you can hop into your new room and get settled for the rest of your vacation. If you have your online check-in completed, you will hopefully receive a text message with your room number once the room is ready. If you do not receive a text, stop by the front desk so they can tell you your room number and building.
Have a great time on your 2-resort vacation!
Cathy