Cindy's lunch refund?

[krismom]

Here's the deal- I currently have ADR's for my DD 7th birthday for lunch at the castle. Now, my in-laws who live an hour away from WDW said "maybe we'll come on her birthday". (Dont you just love that?!) Anyway, IF I could even add them onto the ADR, if they back out on the day of the lunch (most likely) would I get a refund for their meals sice it would have been pre-paid?
I guess I should call disney dining-

Thanks for any info!

 

[Straitlover]

I believe there is a 24-hr notice required on cancellations on all the Signature Dining. Check w/ Disney Dining to make sure