The $150 is a new experience Carnival is trying on a few ships.
I think even these prices might be a little stale
An 18% service charge will be added and applied directly to the guest’s Sail & Sign account. additional gratuities may be extended at the guest's discretion. The fee does not include any beverage that is normally ordered through bar service such as wine, liquor, soda and bottled water.
The reservation fee is $90 USD per person on the following ships: Carnival Conquest, Carnival Elation, Carnival Freedom, Carnival Glory, Carnival Legend, Carnival Liberty, Carnival Luminosa (on Alaska cruises), Carnival Miracle, Carnival Paradise, Carnival Spirit, Carnival Sunshine and Carnival Valor.
The reservation fee is $119 USD per person on the following ships: Carnival Breeze, Carnival Celebration, Carnival Dream, Carnival Horizon, Carnival Jubilee, Carnival Magic, Carnival Pride, Carnival Radiance, Carnival Sunrise, Carnival Vista and Mardi Gras. On these ships, the Chef's Table offers an enhanced experience!
The reservation fee is $150 USD per person on the following ships: Carnival Firenze, Carnival Panorama and Carnival Venezia. On these ships, the Chef's Table offers an enhanced experience!