Originally Posted by
canadiancow
I don't think *G is very useful in general, but it gets you priority services (check-in, boarding, often security) on every *A airline, it gives you high standby priority in IRROPS, etc.
that pretty much sums it up.....i'd also add free check in bags that will come out first. This became my favourite as I now like to board LAST with nothing on (except a backpack).
Their *A integration can be crapshoot as most of the airlines look after their own members first before others.