AFAIK, you may choose anything off the menu - but I have read that some restaurants may restrict certain items. Usually, these are items meant for two.
We've not encountered any restrictions at Teppanyaki or Le Cellier for the CP Dinner Package. My SIL even had the lobster at Teppanyaki - the most expensive entree. Le Cellier and Teppanyaki are the only two restaurants that we've visited for the CP Package. Enjoyed both very much! HTH.