Yes, Disney policy is clear:If one is willing to risk losing $10 a head, go for it.
Disney's cancellation policy is pretty clear, though.
Restaurants offering advance reservations charge a per- person cancellation fee for reservations cancelled after the designated cancellation period, or for no shows. Each restaurant at the Walt Disney World® Resort maintains its own cancellation policy, so be sure to confirm the policy before finalizing your reservation.
https://disneyworld.disney.go.com/faq/dining-reservations/restaurant-reservation-cancellation/
Arriving at the Podium means that you are not a no-show.