Adding a park day to my ticket, and FP+

[Jacket]

I'm interested in adding a day to my park ticket that was booked as part of a MYW package. From what I've read on here it seems like the general advice is to wait until arriving at WDW, and add a day at Guest Services (after having used the ticket at least once). I have a few questions related to this.

1) Does using my ticket at DisneyQuest count as using it for the purpose of price bridging (it is a WPF&M ticket)? Is there a Guest Relations at DQ where I can add the day?

2) Is there any way to book FP+ for this day in advance? MDE will only let me book as many days as I have park days on my ticket, so I presume not.

3) If I can't book FP+ in advance, is it still advisable to wait until I get to WDW to add the day? I'm guessing adding the day to the package in advance could mess up everything from room reservations to price.

4) If I do wait to add the day, which is the best park to not have advance FP+ for? I presume as soon as I add the day at Guest Services, I can then make FP+ reservations on MDE for an extra day. Which park is most likely to still have the very best FP+ available only a few days beforehand?

Thanks!

 

[hiroMYhero]

Because your ticket is part of your upcoming trip, you can call Disney to add on another day to your MYW ticket. Price bridging doesn't apply to your ticket that's included in the package.

As soon as you add a day, you can book the additional day of FPs.