You need to book a Spirit class and then sit in the interior promenade, it is a ghost town for the most part. Also very quiet on deck 3 in back near the restaurant in the mostly unused bar area.
That is exactly why they took out the lower level of the nightclub on the Pride to create 5 more staterooms on deck one along with a dedicated chef's table location also on deck 1. I am guessing the lower level of the nightclub will also be removed on the rest of the Spirit class as they dry dock next.
Some of these decks have been converted to premium view staterooms. Other than the interesting name of "secret" these decks really don't have much appeal imho. They are very windy while at sea and no deck chairs etc probably due to same wind.
If they do to the Miracle what they did to the Pride it's curtains for the lower level of Dr. Frankenstein's Lab to make way for 5 new rooms and a dedicated chef's table. Adios Mr. Monster!
I think the happy hour has gone the way of the dodo unfortunately. I inquired on my last two Red frog trips on the Spirit in Feb and May and they didn't have the half off deal on embarkation day.
I am cruising out of Long Beach in November and Carnival offers shuttle to LAX for 35 per person. You can probably get a better deal on your own with uber or a private shuttle service.
Getting moved isn't automatic. There is a possibility of being moved if Carnival needs a room that supports what you are in that is now underbooked. Off season cruises this shouldn't be a problem. If you have a booking over spring break or summer then your odds go way up of getting moved.
That is a good question they appear to be below an area connected to the bridge but I am guessing a crew bar would be deep in the bowels of the ship. Even if the noise is from the theater it should be limited to only around 10 pm. I have seen the doors closed for practice in the main lounge but only during the day.