We waited over an hour when we were walk ups. I recommend booking Kona, which is my favorite place.. best bread and butter..omg goooood. Great teryaki steak...mmmmmmmmmmmmm. Anyways, Kona is right next to Ohana inside the Polynesian, so you could go to the Ohana check in desk out in the lobby area and ask if they are taking walk ups. Then ask how long is the wait. If it is a go, then walk over to Kona and cancel your adr. If not, enjoy a delicious meal at Kona. Kona's bread and butter is out of this world good... Ohana's is ok. Best thing about Ohana is the sticky wings, but you can order them as an appetizer at Kona, for $13. Kona has great desserts, but not the bread pudding.