First time posting in 3 1/2 years but I figure this occasion is worth it!
I was on both B787 flights this morning.

19C
DFW-
ORD then 8B
ORD-
DFW. I was lucky on the
ORD-
DFW leg as I was the very last person on standby to get on the flight (though I was not on standby on the
DFW-
ORD leg).
The upgrade list for the
DFW-
ORD flight was 78 people long.
There was a lot happening pre-boarding at gate D25 @
DFW. From
AA reps to Boeing reps to CBS News (I made it on the news for a couple of seconds..LOL). Some
AA management and IIRC, someone from Boeing's B787 program spoke before the flight.
All of us received some souvenirs (I still haven't opened mine yet to be honest).
DFW-
ORD was a very fun flight-a lot of people walking around, chatting, checking things out. During the flight we got to check out the cabin crew rest area (in the rear of the plane) and post-flight we got to check out the pilots rest area (just behind the cockpit). Basically anyone who wanted to check the rest area as well as sit in the cockpit was allowed to do so. In fact, there was a person from the FAA who was helping to take photos of people in the cockpit (me included)

.
There were a number of representatives from
AA/Boeing on the plane making sure the ride was smooth. There was also a tech from Panasonic to make sure the IFE went smoothly (he was sitting next to me). There were some minor glitches (for example, two of the Zodiac seats in J weren't working properly). Interestingly enough, some of the
AA employees I spoke with actually paid for the flight. IIRC, one was a director of B787 operations (or close to that position and even he paid for the flight.
The
DFW-
ORD flight probably had 30+ Flyertalk members and 95% "I wanted to fly on the B787 inaugural today". About 5% didn't know they would be on the B787 inaugural and just got lucky.
The return
ORD-
DFW flight was much, much more mellow. There was basically no "partying" and a good amount of pax simply were "regular" pax (i.e. pax not knowing or caring if it was the B787) flying to
DFW.
The same pilot crew and F/A crew did both flights. Also, the captain walked around the cabin during flight (his family was flying in the back of the plane..LOL). He was very cool, took photos with a lot of people (including me).
He also gave out a special
AA B787 inaugural coin (IIRC, one of the souvenirs pre-boarding has an
AA B787 inaugural coin as well).
All-in-all it was a phenomenal trip and I'm glad I was able to take part in it.
Hopefully I'll go into more detail/opinion about the plane (and post some pics) later in another post but after 6 flights in 2 days and two more coming up tomorrow, lets just say I'm a bit tired.