I know about this promotion as it has been coming up automatically on bookings. It is not, however, anything like the Private Sales. The discount is less than for those sales are there wasn't any early preview for members. It also encourages you to book longer periods which might not be suitable for all guests, i.e. 5 nights or more for the higher discounts.
Going by Accors FB page, I'm wondering if they are about to launch a new super sale. They are encouraging people to sign up for a big announcement in the next few days.
Booked VIE Hotel Bangkok in June for 9,957 THB for 3 nights and Mercure Tokyo Ginza in July for 46,440 JPY for 3 nights. Awesome savings, here's hoping both will upgrade/feed a-club Platinum member
Mercure Tokyo finally charged my Visa (after I've pressed them to do so as I'm about to churn it), and I see that they've used DCC, not happy to see that as looks like it added about 10% to my expected rate