Yes you will. We were an AP couple staying at Boardwalk Villas, had reservations for MK on our 4th day, were exhausted, slept in and went to Epcot after 2pm. They would not let us in because we did not go to our MK reservation that day! They had to get Guest Services do some magic, void the first reservation and then make a new reservation for Epcot. What a pain!