The Retreat Sundeck sanctuary is available to every Suite Class guest.The Retreat Sundeck on Celebrity Beyond offers you two levels of unadulterated outdoor bliss. Kick back poolside with a cocktail delivered by a dedicated attendant whos there to take care of your every whim. With two hot tubs, you have plenty of room for a soothing soak. Curl up with a book in one of the secluded cabanasor seating areas that surround you with a calming Zen garden vibe.