Hi, Jan! Especially during very busy times of the year, I think the Fantasmic Dinner Package is a great idea. You get to eat in a nice restaurant, and get to see Fantasmic with less waiting as compared to the stand-by line.
You have 3 restaurants to choose from with this package: Brown Derby, Mama Melrose, or Hollywood & Vine. (Brown Derby counts as 2 table service meals if you are on the Disney Dining Plan.) Of the 3, I recommend Hollywood & Vine. It is the least expensive of the 3, and the only one that is a buffet. With a 2 year old, this will probably make your dinner a bit nicer with not having to wait for your meals to come! (With kids, I am all about speed!)
For a great overview of the Fantasmic DInner Package, go to
www.allears.net, select DINING across the top, and choose Fantasmic Dinner Package on the left side of the page. I think you will find this to be a helpful page to read.
To make reservations for this or any other dining, call (407)WDW-DINE. Have a great vacation!