I have only one FF program, which is Aeroplan from Air Canada. I signed up for it 7 years before when I was a youth just because my leader told me to do so when booking a flight to Vancouver on AC.

In this two months, I have taken a few flights and hope that l can accumulate thousands of miles into the program and presented my Aeroplan membership card when checking in, but I only found out after taking the flight that, although the number is printed on the boarding pass, the airline involved does not participate in the FF program. I found that, among the 4 different airlines I have taken, AY (oneworld), J2 (non alliance), CA (*A) and CZ (SkyTeam), only CA participated in the program.

Have I made a mistake of using a wrong program? Is it possible to make most out of the flights even I have taken them already?