I agree about the balcony, although it's more expensive.
Last few cruises I had an inside cabin and tossed and turned all night worrying I would oversleep my day at port as no light gets in.
NEVER book during Spring Break or you will be overrun with drunk college kids up all night running down the halls.
ALWAYS get up off the toilet before flushing. The suction will give you a hickey on your ass cheeks and you will be explaining it to your wife.
