Elizabeth:
My husband and I LOVE to go to WDW
without our children--and have done so many times for business trips AND "just for us" trips! If I were in your shoes, I'd be tempted to tell the kids your next trip is for "mom and dad only...." But it sounds like you're a softy, and a trip with your adult children can be just as fun as with younger ones! I'm not at all surprised they want to come along!
Frequent visitors to the panel know that I am a fan of the dining plan, as it helps families stick to a budget, and if you enjoy eating more than sandwich fare or counter service, are a good choice, as you'll end up saving about 20% to 30% than if you had ordered otherwise, especially if you have children.
There are no hidden costs with free dining. But new in 2009 was the addition that on top of paying up front for the plan you will be charged gratuity of 18% at the time of dining. What I like most about the plan when you take a group of adults, is that there is no uncomfortable feeling when the check arrives (you know: who's gonna pay? do we separate? does Dad get left with the check?....)
I usually recommend the Basic Dining Plan for families with children, but you may want to consider the
Deluxe Dining Plan if you enjoy Disney Dining, especially the signature restaurants or the dinner shows. (And gratuity is included in the dining plans for the dinner shows).
Wishing y'all a magical vacation!
Whitney