Most cruise lines close, net off, the pool and hot tubs on the Lido Deck around 10pm (ships time), due to the fact that pool attendants and servers are busy doing other things around the ship.
You can usually get 24/7 access to a hot tub, sauna, and other amenities by appointment only at the spa.
You can usually get 24/7 access to a hot tub, sauna, and other amenities by appointment only at the spa.