First and foremost, you must attend the lifeboat drill. If you refuse to participate, well, you could be left at the dock waving goodbye. The cruise director mentions that over the PA system, and it says so in your contract.
My cruise started on Feb 10th. I've cruised several times but this is my first HAL. I would definitely cruise with them again.
The only complain I had, the two weeks went way too fast! It was hard to leave the ship.
Good location on Deck 6, plenty of room (I was travelling solo anyway)