Anantara Spa at Mina Al Arab has separate men’s and women’s wet facilities with a sauna, steam room and whirlpool. The operator takes individual spa treatment bookings, and Ras Al Khaimah’s tourism authority confirms that day visitors can book treatments with wet-facility access included in most bookings. Ask which treatment includes sauna use before reserving; the separate beach pass alone does not establish sauna entry. The photo shows the spa’s actual relaxation area.