We visited Pandora today and rode FOP and NRJ. Looks like 30 new pages of posts in the last 2 days and I am bone tired and not going to read them all tonight. I am probably repeating things others have posted. Sorry about that!
I will give some practical feedback for those visiting soon in case others have not covered all of this. Then talk briefly about how we felt about the rides and land.
We managed to get FPs for both FOP and NRJ because of the glitch that happened briefly on the day FPs opened. The glitch is gone so please do not ask.
We arrived at AK about 6:10AM. We got in the no bag line. The line started moving around 6:20AM to let guests into the park. We entered for the AM EMH at 7AM. We had FOP FP for 11:10AM-12:10PM and NRJ FP for 12:10-1:10PM. We decided to visit the rest of AK in the morning and come back to Pandora after we finished lunch at 11:30. We did not fully realize that there was a 60-90 minute line just to enter Pandora that snaked all the way back to Rainforest Cafe. After we realized this we thought at one point we would miss out FP window for FOP

scared1

when we finally found the end of the line around 11:45AM. A CM told us we could skip this line if we had an active FP for Pandora which we did. So we made our way forward and found where to go after asking several CMs and got into Pandora around 11:55.
We got mostly correct information on how to get to the FOP FP line. It was all confusing because there were lines of people EVERYWHERE. It looks like Disney did a good job with the situation considering all the people and newness. But it was still confusing. It was awesome when a CM realized we had been misdirected at one point and personally led us to the FOP FP line. We got to the FP line at 12:06PM with 4 minutes to spare on the FP window.
Bottom line - if the lines to enter Pandora persist, and Disney keeps the same policy they used today, wait until your FP window opens to go to Pandora and you can skip the line outside Pandora.
As for the rides and Pandora itself, we do not have much to add to what the CM/AP/DVC previews said. FOP is Soarin x 10 (really Soarin x 100 in my book) and saying it is a cross between Soarin and ST is about as close as you can get to a description. Totally awesome and unique. The images that flew past me are still buzzing in my head and impacting me 8 hours later. DS26 and I were just discussing this while walking along the Boardwalk tonight and he agreed. It appears the SM line reached 250 minutes today. And that would be after waiting 60-90 minutes just to enter Pandora in the first place.
NRJ was pretty cool and very visually appealing. But nothing all that great. It had SB lines that reached 210 minutes.
As some others have mentioned, Pandora itself was smaller than I expected.
The lines for food and stores were all really long. We did not even try. We ended up spending about 90 minutes in Pandora.
We have FPs for tomorrow (Sunday) night for FOP and NRJ again, so we will get to see the nighttime version of Pandora that everyone has been talking about. We are looking forward to that,