Hi, Melissa! I really recommend you make Advance Dining Reservations for all your table service meals. I know it seems like a big job to do ahead of time, but you will be glad you did! Due to the extreme popularity of Disney Dining, restaurants fill up quickly and without some planning you might end up with only counter service meals (which is OK, too! There are some nice counter options!)
What I suggest you do is map out which parks you plan to visit each day, and make one reservation for each of those days based on the park you will be in. And if your kids are like mine, the first thing they'll ask each morning is "What are we doing today?" By having a plan for the parks and dining, you will have a quick and easy answer for them!
You can make your dining reservations 90 days in advance either on-line at
www.disneyworld.com or by calling (407)WDW-DINE. Good luck planning and let us know if you need dining suggestions!