What do you define as "wait with a FP"?
a - Do you define that as the time you wait from when you tap your FP till you merge with stand by riders?
or
b - Do you define that as the total ride time?
Personally, since having a FP should only apply to the time before you merge with stand by riders, I only use definition a. It's rather misleading to use definition b since having a FP, or not, is irrelevant, once you've reached the merge point. Everyone's wait is the same from the merge point on. If that makes sense.
So, once you scan in with your FP, and walk up to the merge point, it's usually 2, 3 min. So basically no wait at all. I've ridden FoP approx 20 times with a FP and never had more than a dozen in front of me at the FP scanners.
Now, once you scan in and merge with the stand by and get sorted in to lanes (think like at Soarin') that wait is usually a total of about 30 min, on avg. I think of that as the ride length. From that point, the fact that you had a FP is completely irrelevant. FP riders don't get a separate ride line