Hi there,
I know you have booked full board, but is this plus, premium or standard? I would recommend getting value for money by booking the more expensive restaurants in advance. For example, the PLUS menu package allows you to eat at Cafe Mickeys at any time of day, and your children will enjoy meeting the characters. The premium package will include meals at Inventions at the Disneyland Hotel, again allowing character interactions with your children. Have a look at menu choices & what your package includes on the DLP website. And as another member advised, book ahead!
If you plan carefully and make the most of extra magic hours (for Disney hotel guests only), you should get most things done in two full days. Be sure to pick up a guide to see times for shows and parades. Have a wonderful trip!