Originally Posted by
cfischer
the only problem is that a C-class pax cannot bring any guests
check for FB GE/PEs or other ST E+ on the flight, they can bring a guest.
Totally true and it makes things even easier as Flying Blue Gold/Platinum or Skyteam Elite Plus members can also be in Economy class where the OP will be flying and not necessarily in J cabin.
A quick look at the Passenger Information List (PIL) after "tipping"
the Chief Purser or a fastidious work of screening and checking out passengers will let the OP identify who is FB G/P or ST E+.
Just an even easier solution: just "tipping" to purchase and get to keep the boarding pass from a FB G/P ST E+ and that's all. Provided that the lounge dragon doesn't check identity if FB number and status show up correctly on the BP. This is riskier though... (especially if the name doesn't match the expected face...
).
-vinnyc