There is no charge for the breakfast. You do need to make reservatoins for the Dreamworks character breakfast; but u can still go to the chocolate breakfast.
Allure of the Seas | Oasis Of The Seas
when u click on this link, it takes you to RCI videos; click on the Royal Experience videos, then click on "A Sweet Start: Chocolate Indulgence for an ultimate breakfast"
this is the video explaining the chocolate breakfast