Be careful to check your fare with and without code. I checked for a date in April for YYC-BKK and got a great T+ fare of about $850 base fare return. With code the fare jumped to $1750 in T or $1936 base in T+ for ONE WAY. I expect it was an IT problem as return looked ok... Correction, the code does not seem to apply to Star partners so that may be why it was oddly high...