Don't know about noise level of your rooms...but I can tell you it's not under the night clubs...the clubs are more Forward...and your rooms are Aft. There port side and near the Aft elevators. Direclty above the rooms is the hallway leading to Parrot Cay....so unless it's engine noise it shouldn't be to bad...but then again right below the rooms is the Aft Tendar lobby...but that would only affect noise level on port days durring boarding times.
Just checked the dcltribute.com and your rooms are listed in the noisy area...said the noise shouldn't ruin you vacation...but if your sensitive to noise you may want to invest in some earplugs. Sounds like it's a dull humm/vibration from the engine or what not.