Well, your impressions do not accurately reflect the reality, but you are entitled to your opinion even if it is dead wrong. I don't want to engage in any protracted arguments with you simply because there is no logic to your conclusions; they are preconceived notions.
What I expected was a normal service for the two who were seated in BE and merely a civilized treatment by the FAs of everyone. Ignoring two out of three BE paying passengers in the otherwise empty cabin and demonstratively taking care of the non-revs considering them "premium customers" was poor service.
Did not expect anyone to move anywhere. I am vehemently opposed to on-board upgrades by FAs, and said so on this board too.
My children did not cause any serious trouble, but the FA's conduct was unacceptable regardless of whether they were sick or not.
The experience would not have been miserable at all had the FAs not made it as bad as it was.
And yes, I considered my fellow passengers. Always do. Neither I nor my family members have been "disruptive" in any way, neither in Y, nor in BE, especially since there were no fellow passengers in the BE altogether.
Enjoy peeing in the "exclusivity" of the BE lav! We all self-validate in different ways.
^
OP, I sympathize with you.
I do NOT fly Delta or U.S. airlines to Asia. Have you and your family been on Cathay, or Singapore which I fly regularly, your experience would have been impressive and memorable in a very good way.
Many times on flight to Europe, I have witnessed FAs being extra 'helpful' and 'generous' to their peers, which is fine only if they do not neglect the other pax. Sat next to a luggage handler (believe a supervisor) once, and different FAs constantly dropped by chatting and asking if he needed anything...etc. It was a bit annoying but fortunately he was a considerate gentleman, making the conversations very short, and leaving his headphones on most of the time.