How do I upgrade a 4 park magic ticket?

[Disneyplanners]

We are a family of 5 headed to wdw in about a week. 4 of us have dvc gold passes that expire in July. DD3 needed a ticket for this trip still, so we purchased the 4 park magic ticket for her. We would now like to make a bonus trip in June to make use of our ap's one last time. Where do we go and what do we need to make this upgrade, and should we do it our first day there? We will be upgrading her ticket to the dvc gold pass also. Thank you!!

 

[omniscientmommy]

You need to upgrade by the last day of your ticket to have the ticket amount applied to the pass. You should be able to do this at any of the park ticket booths or Disney springs.