Hi McGrace, and welcome to cruise-chat.com!
N. Majesty's pools and hot tubs are in uncovered areas. I don't recall if the hot tubs have a small covering... I'll have to check my photos. There are some covered tables on Sun Deck, but not many, to the best of my recollection. There is a wrap-around promenade on Deck 7 that is covered. Occasionally, there are deck chairs out there, but not all the time, as this is also used as the jogging track.
Please ask lots of questions! N. Majesty is my favorite ship currently in service.