I have not stayed in either of those cabins, but have stayed in different cabins on deck 8 on every cruise we've been on. If deck 9 noise is a real concern, you are better off staying almost all the way forward. The quietest cabin we have ever had was 8508, which is under the hair salon. We never heard a thing from deck 9 all week. All of the cabins that are forward of the forward elevators are under the spa area, so they should be quiet. We have heard deck 9 noise in every other cabin we have stayed in, some worse than others, especially early in the morning when they are setting up for the day.