This is what is on Carnival's website today. Gratuities are not mentioned as included anymore. I'm sure that some servers are not receiving their full gratuities as some are thinking the gratuities are still included. I clearly read this as the gratuities are not included but are optional.
*Please note: Requested dates and times will be honored on a first-come, first-served basis. Dress Code is Cruise Elegant. Dress jeans are allowed on Cruise Casual evenings. The fee includes an appetizer, entree, dessert. Gratuities are optional and may be extended in cash or to the guest's Sail & Sign Account, at the guest's discretion. The reservation fee does not include any beverage that is normally ordered through the bar service such as wine, liquor, soda and bottled water. All dining rooms are smoke-free. Please allow 1 to 1 1/2 hours for dining experience.