ford91exploder
Resident Curmudgeon
This exact thing happened to us during our trip in early December, when Splash was down during our FP+ reservation. There was no need to schedule a different FP+ experience or time - we simply walked right up to Big Thunder's FP queue and used the bands replacement/wild card FP+. The FP+ replacement was good for one attraction for the entire rest of the day (during normal operating hours - not EMH or party hours).
Here is the full text of the alert e-mail we received from Disney:
"We're sorry, your previously confirmed FastPass+ selection for Splash Mountain® from 12:45 PM to 1:45 PM on 12/08/2013 needs to be changed because the experience is temporarily unavailable.
As a replacement, you may now visit any one of the following FastPass+ experiences on 12/08/2013, starting at 12:45 PM through anytime during normal Theme Park operating hours (Valid Theme Park admission is required and your FastPass+ selection cannot be redeemed during Extra Magic Hours):
Experiences*
Haunted Mansion®
Monsters, Inc. Laugh Floor®
Space Mountain®
Buzz Lightyear's Space Ranger Spin®
Big Thunder Mountain Railroad®
Splash Mountain®
Tomorrowland Speedway
Pirates of the Caribbean®
There is no action needed to select the experience in advance. During the designated day and time, just arrive at the FastPass+ entrance to one of the experiences above and touch your MagicBand to enter!
*Note that you may be able to still experience your selection for Splash Mountain® if it becomes available again today, unless you opt to visit one of the other listed experiences.
Visit My Plans on My Disney Experience for more details."
They forgot
Watching Paint Dry
Watching Grass Grow
Sorting Recyclables