Hi!
Been forward and Aft.
Forward positves:
More predictable motion. (Mostly up and down)
Close to Kids clubs, Adult pool, Spa.
IF you ge an outside stateroom, and the weather isn't too hot, you can leave the outside door open at night and hear the bow wash

. (though they do request that you not do this) VERY Relaxing.
Negatives:
More noticible motion
Farther from the food

(this could go in the plus column)
Tends to be noisier(hallway/people noise)
Aft positives:
Less motion
Closer to food
Closer to Mickey Pool
Closer to the coveted Aft Deck 7
Negatives:
Motion tends to be less predictable, often fishtail like.
Can be noisy, but has never been too bad. You kind of get used to it, like white noise.
These are just MHO. The milage you get may vary. Either way, though, a very nice ride. Enjoy!
Tracy