We began our back-to-back cruises with "maybe this ship IS too big" and ended them with "I want to sail again on this spectacular ship!"
What a ship! Yes, she's big but after the initial shock we found her easily navigable and well laid out. We found crowds only when shows let out of the Amber Theater and Studio B and sometimes in the Windjammer (which we only used a couple of times). And she's beautiful -- if you go try to find time to admire all the artwork and the decor.
A lot goes into the making of a successful cruise -- the ship, the crew, the food, the entertainment, the ports. We took these cruises not for the ports but for the ship and to escape the winter weather for a couple of weeks (it was 7 degrees when we left home!) Nothing disappointed -- the ship is incredible, the crew was to a person friendly, the food ranged from good to excellent, the entertainment was like nothing we've seen elsewhere and the ports were as expected.