Per the Hyatt website:
When "BREAKFAST" or "BREAKF" is requested at time of booking the rate will include a Country Breakfast for up to two people per day per stay, except day of arrival. Breakfast is only available at designated hotel restaurants, not applicable for Brunch or Room Service. Breakfast includes Coffee, Tea, or Juice and one a la Carte entree OR the full breakfast buffet if it is offered in that particular Hyatt Hotel.