If your access to the facilities MWR is based only on the expanded eligibility under PHDVEA, (disabled veteran new access privilege), that is for the disabled veteran and their VA registered caregiver. Spouses are allowed but at the discretion of the facility commander. Some allow spousal escorted access, others do not. Some will extend a multi-day visitor pass for RV camping, others require a daily pass.
If your spouse can qualify as a caregiver, that has been the way many couples have received authorized access for their spouse just like for them self.
For what it's worth, there was never anything in the PHDVES Act that automatically allowed spouses of the newly eligible veterans to have base access. It was always just the eligible DV and their VA registered caregiver. Spousal access was always at and still under the complete discretion of the facility commander.