I’ve taken my 2 year old a few times this year. At any buffet/all you can eat type place (like Chef Mickeys) they can basically just have their own plate and you can get them as much as they want from the buffet. I’m not sure if it is still family style but when it was, they brought a big platter to the table with everything offered and everyone could eat off of it, including my 2 year old. For any Prix Fixe (adding just in case!) … I’ve had two different things happen. Sometimes they will offer a small plate of something like chicken nuggets with mashed potatoes and a small dessert like whipped cream shaped as Mickey (at no additional cost). Other times they do not offer anything other than a drink and they will have to eat exclusively off of your plate. I’ve had both happen to me at Be Our Guest, so I think it really depends on your server. Also, yes you must add anyone under 3 to any dining reservation you make.