Chef Mickey's is great for kids. Mickey, Minnie, Goofy, etc. all come out and stop at each table so you can take a quick picture. Ours LOVED it & enjoy looking back at all the pictures. My biggest suggestion is to always have kids sit on the outside of the table with the adults on the inside. That way when the characters come out they have easy access to the kids..and you are on the opposite side to snap the pictures.
Even if you don't go to Chef Mickey's, when making your meal reservations, be sure to reserve a couple of the "character meals", it's so much easier to take the pics there, as opposed to waiting in a line while in the parks.
Also, if you did the meal plan and are staying at one of the resorts, you can also have pizza ordered to your room/villa..we didn't realize that until our last night there.
We used a travel agent too and she was wonderful with suggestions, but we were on our own to make our meal reservations. I did ours over the phone & the Disney Dining rep gave us wonderful suggestions..we loved everywhere she suggested. She suggested T-Rex (it wasn't a character meal), but our boys especially loved all the dinasours & the food was great.
Have a blast! I'm so excited for you!! I'd give anything to be going back, but it will have to wait a few years!