Gold member (0-380 points) within 6 months.
10 dollar spend = 1 point.
380 points = 100 off.
Automatic upgrade to Diamond if you are able to get the 380 points within 6 months of getting the card, and the points never expire after that.
Diamond member (no expiry of points)
10 dollar spent: 1 point.
380 points = 100 off.
Birthday + 190 points = 100 off.
Might need to visit ginza often that first 6 months to get that Birthday discount and Diamond status.

