Originally Posted by
Dracarys
The added benefit is that they will get their own 15 Skyclub visits per year. All of their spending will be added to your MQD.
It’s really just the 15 SC visits.
If you opt for the “free” AU card (which is a AMEX DL Platinum card), that spending counts towards your MQDs as well at the 1 MQD per $10 spend ratio.