FoP is amazing. We have ridden 4 times this week (2 RDs and 2 FPs), and not waited more than 10 minutes in the actual line. We don't wait more than 20-25 minutes ever. We will ride 2-3 more times in the next 3 days as well. Of course, to RD effectively you must be there early (1.25 hrs on emh day, or 1.5-1.75 on non-emh day), be first or second in bag check line or go bagless, then near the front of the tapstile line, and really hustle to final holding point. It is a stressful rope drop experience for sure, but worth it! Our first time (last Friday), we were off the ride by 9:15, and the line started in Pandora, went all the way to Africa, and then doubled back to FoP. It must have been a 6 hour standby line from the end, and that was 20 minutes after opening.
That all being said, it truly is the best ride at WDW (currently) imo. For those that feel seeing the main queue is important, I personally think that's a ridiculous reason to wait 2-3-4 hours... but to each their own! Not to be missed attraction though!