Well, lets see:
Baby Paige crawls around the restaurant and some guests like her and some don't so you have to keep returning her to her little play area or the guests who don't like her will lose hearts. This makes it difficult to gain expert status. If you don't get her back to her play area before she gets unhappy she starts crying and the guests start losing hearts immediately.
You have to select the menu every level and some recipes are overly complicated.
Also there is a kind of surprise regarding Emily's restaurant towards the end of the game.
The dialogue is rather lame.