It doesn’t mention Miraval but does mention that M life is not included in waived resort fees:

(l) Waived Resort, Destination, or Facility Fees: Resort, destination, or facility fees, where charged by the applicable hotel or resort, will be waived for Globalists when paying an Eligible Rate. (As described in Appendix B, resort, destination, or facility fees are waived for all Members when staying on a Free Night Award.) This benefit is not valid at any Hyatt Residence Club resort, Oasis Home, or M life Rewards destination. In some instances, a hotel or resort may charge other fees (such as a “service fee”) that are independent of any resort, destination, or facility fee charged by that hotel or resort. Any such fees will not be waived for Globalists pursuant to this benefit.