I have done I think 5 or 6 of them from 4-6 years ago all with facility visits. Dressed business (had a tie on but no jacket) like and brought my normal carry on and it was placed either in the cockpit or first class. I shaved my beard and such, checked in right away and was one of first to board. The system was new so there was a lot of unknowns, I missed one of my flights b/c the gate checkin lady had no clue about what to do. Even the manager was new about it. They did their best but I still missed my flight, but yes remind them to look under ATC and once your in CASS it’s easy.
As for the flights I have gone from an extremely quiet/professional flight (they thought I was an FAA Inspector even though I told them multiple times I wasn’t) to having just a blast and shooting the shit all the way til touchdown. By now though I think it is probably known about the jump seating and flight deck training so the (extremely quiet flights) shouldn’t happen. I have enjoyed every single one of my flights, the jump seats are mostly cramped space (yes there are a few good one) but my flights were all on MD-88 or E-190, etc.
My first ever flight deck training was ACK-JFK, JFK-PBI. What the pilots didn’t tell me was when we touch down the “forces” of them hitting the breaks and what happens to you in the jump seat, lol. We landed and they hit the brakes and my hands and feet went flying and I swear I almost hit the throttles forward, lol. I thought I was gonna fly out of my seat, I learned really quickly after that where to put my feet on landing. Almost all the pilots were awesome, it’s quite interesting to hear all of their stories. I learned about the A/C system and saw how the captain was showing/teaching the F.O. about to actually heat the plane rather than just shut the air off if the flight attendant says it’s to cold, which helps ice from building up in the system. How some F.O.’s don’t want to move over to left seat b/c they are so high in seniority and they like the schedule and their base. Got to actually see a closure rate of 900mph and HOLY FUCKING SHIT THAT’S FAST, lol. Got to see an A/C pass 1,000 feet below us and I swear it looked like 20 feet below us.
Basically I would definitely recommend doing FDT and enjoy every second of it. The flights attendants were all awesome and happy to talk and ask questions. I had a bunch of ATC questions from the pilots, some I could answer others I just didn’t know and told them that (sorry not a center controller so I don’t know, they understood). Have fun doing it.