You can find the cancellation policy for each restaurant for which you’ve made a reservation in the email that you received when your booking was confirmed. Typically, most restaurants at Walt Disney World Resort charge a fee of $10 per Guest if a dining reservation is cancelled less than 24 hours before your selected time.
I’ve dined at both Raglan Road Irish Pub and Restaurant and ‘Ohana and, from what I remember, they followed the typical 24-hour cancellation policy that is used by most Walt Disney World Resort restaurants. That being said, please contact the Disney Reservation Center in order to confirm whether this is still the case.
Please don’t hesitate to come back and see us if you have any other questions about your upcoming Disney Parks vacation!