Adding Days to MYW Package

[NYDisGuy]

I actually want to add the water parks and more option to my base pass. I purchased the tickets with the disney dining package, but my question is how many days before the day I arrive can I add or change the myw tickets?

 

[seashoreCM]

Not sure how many days in advance a moratorium on changes kicks in but ...

Keep in mind that if you modify the tickets before arrival, everyone in the room has to have his ticket modified to be the same.

After check in, each person can modify his ticket differently if he wants to.