There is absolutely NOTHING wrong with cabins on the lower decks! In fact, you will be closer to the shopping, show lounges, dining rooms, bars and lounges, etc., than if you were on higher decks! Also, you will get a smoother "ride" (the motion of the ocean won't be as bad down low as it would be if you were higher.) The cabins and service are the same. Ships, compared to land based resorts are smaller....therefore the distances are not as long as they seem to be. The exception to the above is that the buffet and the pools will a little farther away, but what is one minute in an elevator in the scheme of things? Go and have a great cruise - and quit worrying about how high or low on the ship you are.