Check fastpass availability for party of 4

[soniam]

I can't do this. MDE says I have reached my fast pass limit anytime I try to select a fastpass on the current date.

You have to go in and act like you are replacing your FP+ with a different day. It won't actually cancel them. There's a big thing at the end that will ask if you really want to cancel. That's when you say no. It won't actually mess them up unless you really cancel. I can't go through and tell you what the exact messages are because I have an AP.

 

[soniam]

Try this.

Log in to MDE. Make FP+ selections. View details on one of your FP+. Pick a tier 1 FP+. Modify it. Select your party. You will then be shown what FP+ you could replace that one with, including different times for the same attraction and different times. That will let you see availability. Just don't actually replace anything.

EDIT: That's still not going to get you a different day though, since you already have all of your FP+ days booked. You might just have to ask on the boards if someone can look for you on a particular day, time, and park. Someone who hasn't booked all of their days yet or has an AP should be able to do it.