Understood. But if the ride had been shut down from 3:00 p.m.-9:00 p.m. as others have reported, then you would not have been able to use your FP. At which point you would have been offered an opportunity to get a FP for "any other attraction", which actually translates to "any other attraction with availability." At which point you would have been shut out of Soarin' and Test Track and would have gotten an unnecessary FP for Nemo or Figment, at which point you would have come here and barked. You got lucky that you were able to secure a Tier 1 FP and actually use it. Others are finding out that their Tier 1 FP is unusable, and they cannot swap it out for another one. That is a pretty rough thing to have happen.
It's actually not subject to availability. You just march over to whatever replacement ride you've selected, touch the FP tapstile, and walk into line. I would 100% recommend getting FEA as your FP if you want to ride it. Best case is the ride is up and you get to ride. Worst case is you can go to Soarin' or TT (or anything else you'd like) at whatever time you choose. You don't have to worry about conflicts with ADRs or being in another line during your time, etc. We used ours for TT and had no issues redeeming it exactly when we wanted.
Here's the email we received to notify us FEA was down:
Frozen Ever After is temporarily unavailable. Your
FastPass+ selection for11:25 AM to 12:25 PM on 07/04/2016 has been modified.
You are now eligible for one (1) of the following options:
OPTION 1:
If Frozen Ever After becomes available later, you may visit this experience any time from 11:25 AM on 07/04/2016 through the end of normal attraction operating hours.
—OR—
OPTION 2:
As a replacement to your
FastPass+ selection for Frozen Ever After, you may instead visit one (1) of the following
FastPass+ experiences anytime from 11:25 AM on 07/04/2016 through the end of normal attraction operating hours.
Experiences
Turtle Talk With Crush
The Seas with Nemo & Friends
Spaceship Earth
Living with the Land
Mission: SPACE
Disney & Pixar Short Film Festival
Meet Disney Pals at the Epcot Character Spot
Soarin'
Journey Into Imagination With Figment
Test Track
Frozen Ever After
There is
no action needed to select the experience in advance. During the designated day and time, just arrive at the one (1)
FastPass+ experience of your choice and touch your
MagicBand or
Theme Park Ticket to enter!
Valid Theme Park admission is required.
FastPass+ selections cannot be redeemed during
Extra Magic Hours.