Friedmush, it might be that the Drift Spa at Palms Place is not be owned by Palms. Previously, one could use the LVA coupon at the spa at Palms. That spa closed.
Last year I used a travelzoo certificate at Spa Mandara at Paris. I learned that Spa Mandara at Paris, Spa Mandara at PHo and the GlowSpa at Tropicana are owned by the same parent company that owns Elemis and bliss. I also learned that one can only charge to their room at Spa Mandara at Paris if one is staying at Paris. I was not able to charge the additional items to my room at PHo then pay with reward credits at check out.
Westie, thanks for posting.