DDP deadline?

[Yvette]

I'm busy planning our May trip to the World and I haven't quite convinced everyone on the advantages of the Dining Plan.

I know we have to pay off the package 45 days prior to our vacation, but how long do we have to add on the DDP? Is it the 45 day mark also?

[Strmchsr]

I'm fairly (but not 100%) certain that you can add the DDP up to 10 days before arrival. I definitely know it has to be added before check-in, but just not sure about the number of days.