Any deck can get noise depending on what's directly around the stateroom you're considering. Find where your stateroom is on a deck plan. Look around your stateroom. Are you up against an elevator? That could be noisy. Then, look at the same area where your stateroom is on the decks directly above and below. Is there a night club below you? That could be noisy until very late hours. Is there a eating are above you that serves breakfast? You might hear chairs moving around from early people getting breakfast. Approach your stateroom location in that way and I think you stand a better chance of not being surprised by really crazy noise issues.
If you take Disney's transportation from the port to WDW it'll be on a really nice bus like the ME or maybe even nicer. Maybe it could make the journey that much more exciting and fresh with a new take on the magical ride. I suppose you could take the bus to the airport then hit the regular ME bus but that's going to take extra time that you could have enjoying the arrival of your destination at WDW. Personally, I'd take the bus to my resort and enjoy the new perspective.
I've read about people having not-so-positive experiences with table-mates. Understandable. You can request (remember it's not a guarantee) to have a table to yourselves. I imagine your chances of getting this request are better if you do the 2nd dinner seating because it tends to not be as full as the 1st. Also, maybe go to your first dinner to see what it's like and who you end up seated with. I've read just as many times where people were seated with others who ended up becoming great friends and even planned future voyages together. If after the 1st night you were uncomfortable with your tablemates you could always have a private word with your head waiter, explain the situation, and request a move. If flaky-mates happen to see you after the first night and ask you can just say the waiter approached you asking you to move so they could disperse the diners more evenly or some other little fib to smooth it over. Just because you get parked with uncomfortable table mates at the start doesn't mean you don't have options if it's not clicking for you. K?
I don't want to be negative. I won't discuss our 2 spa experiences on the Dream in all their awful, sickeningly priced, nasty details. I'll just say that I've had far better manicures, pedicures, and massages at my local establishments at much more reasonable prices. And, if you don't like sales pitches at every turn I highly recommend that you tell this to the person who makes your reservation for you, tell the person who is about to perform your service, and tell everyone you can in between. It's not rude. You can say, "Please, no sales or soliciting today. I am not interested in purchasing any products that pertain to what you are doing. Thank you." Spa prices? Fire & Ice Mani/Pedi was $100 before tip. (I didn't tip.) The couples Swedish massage, 50 minutes, was $242 before tip. (I wasn't going to tip this one either but the hubby did.) If there's something in particular you want to do I'd book it as early as possible because the most desired times can book up.