We visited AK and Pandora on Tuesday the 13th. We arrived at the park in the afternoon and had no problems with parking. Our FP+ for FoP was for 4:15 and we essentially walked right on with it. There was no line to get into Pandora, and we entered from Africa. I was in spot 16 for the first ride. While FoP is well done and a fun ride, I really feel like it's overhyped. It's a motion simulator with a wrap around screen, set in a theatre with atypical seats. The talk about the seats is overblown, IMO. It's like straddling a bicycle, but you don't actually go anywhere. A screen opens and you're shown a very beautiful, immersive movie, with lots of wind blowing in your face, smells piped in, and an occasional spray of water. Very fun ride, but not particularly innovative beyond the seat.
We left Pandora after riding and had dinner at Tiffins, then did the safari and EE a couple of times before returning to Pandora. My family wanted to ride FoP a second time, so we braved the 125 minute posted wait time and got in line around 10:25 pm. They were not closing the SB line to non-resort guests when we got in line. The ride went down for 20ish minutes while we were in the cave, but we ended up back outside by midnight, so even with the stoppage we only waited about 90 minutes, much lower than the posted wait time. That second time, I think I was in seat 11 and I noticed no difference in the movie experience from when I was in 16.
After we rode FoP, we noticed the River ride had a 15 minute posted wait. It was NOT 15 minutes...we walked right on, had a boat to ourselves, and the CM told us we could stay on for a re-ride if we wanted to. It's a very beautiful ride, but it's pretty uneventful. No small drops like on Pirates, and very short. My son said it reminds him of the Donald boat ride in Epcot (in the Mexican pavilion) and that is more accurate than comparing it to Pirates, IMO. Very nice, but not worth a long wait.
Overall, Pandora didn't really wow me. I walked away thinking it was a neat addition to the park, but after reading all the hype on here I was underwhelmed. I think that avid Disneyphiles will love it and the general public is pretty agnostic about it. It was a big topic of conversation in the hot tub at the resort, and no one we talked to was overly impressed.