We just got back from what was MY 1st time on a "real" cruise ship. I'm 46. My girlfriend had been on one other cruise about 20 years ago - so you can classify us as "newbies".
We talked about this short cruise for a while about 2 weeks leading up to departure. We booked it just about a week before the departure date of July 12th. We locked in our Interior room 1402 on Deck 1 for just over $300pp - we felt that was a very good price on such short notice.
This cruise was a "no brainer" for us once we got our schedules together for it. We come from NH. No airfare or hotel needed. We're just an hour drive to the terminal, dropped off our checked bags, parked the car, hopped the shuttle and we were boarding in no time. We got there at about noon. We were on board by 12:30.
We loved our cabin. We were on Deck 1, Riviera. We were about 3/4 of the way down towards the aft. We had a cabin that had 2 double beds that we had converted into a King. Plenty of room for what you do in your cabin...sleep, shower and change clothes. Plenty of closet and drawer space. Could have a LITTLE more counter top space for things you buy, etc. but no problem. Efficient use of space in the desk and TV area. And it had a mini bar.
We were concerned about possible engine noise prior to the cruise. It was never an issue. We heard a very low hum that never changed pitch the whole time - perfect to fall asleep to.
The hallways can get noisy. But just like hotels, you can't manage kids running down the hall at 2:00AM. we never heard anything from next door cabins, above or below us.