I would not be happy being on the Promenade deck. Could walkers see into your cabin if you had the light on or were the windows one way viewing only meaning that you could see out but those outside couldn't see into your room? Did you complain to the front desk and ask for another room?
Review by blacjacjones
In response to review, glomarrone says ...
On the Golden Princess you can't see in from the promenade or deck 8, so I'm guessing it's the same on other ships.