Mariner of the Seas Sauna/Steam Room

[Footsieiii]

Hello all you Fellow cruisers out there,

I have a quick question. I normally cruise on Carnival but I have a group of friends who decided to cruise Royal Caribbean's Mariner of the Seas so I need a question answered. After going to the gym I like to decompress in the Sauna and Steam but I am unsure if RC charges extra for these on their ships. I know they do on certain Carnival ones. Any help would be greatly appreciated.  

[CntPAcruiser]

As far as I know, Mariner still has men's and women's locker rooms in the fitness center that have free steam rooms/saunas. They are quite nice facilities.