CBR is my preferred moderate hotel. I haven’t been back since the Skyliner started (Happy First Anniversary this week Skyliner!) But I can answer a couple of your questions…
The preferred rooms are at Trinidad North and Martinique (buildings 24, 25, 26) - The walk from those to the skyliner isn’t too bad. It’s “preferred” because you are closer to the main building / lobby.
Here’s an image I use when helping people figure out the buses there that I’ve highlighted for you. (The yellow line is the bus route)
They are closer to the center of the complex. As with a lot of places it’s going to depend on the people staying around you. All the rooms at CRB have doors that face the outside - not interior halls. This is something I like as hallways / elevators tend to echo as people come & go at all hours.
Personally, I stay in Trinidad South. I’m a very light sleeper & I have found these to be the quietest buildings. IME - The reason for this is because they are the furthermost away from everyone. But I’d rather walk 5 extra minutes & sleep better all night. (Plus these room have the Pirate Ship beds! They are small double beds, but I’m 5’ 2" so I fit easily! Also, I like sleeping in a themed bed that my parents would have never gotten me as a kid!)
This is a real issue at CRB. Even though I like staying in the furthest section to sleep it means you can get bad bus service. This is because by the time they get there they can already be full and won’t stop. Then you have to wait until more buses come, which will continue to pick up those guests at the closer stops first and still have to find room for you. I’ve watched 3 - 4 full buses go past people waiting at stops further down the line.
I gave up on buses about 12 years ago due to how long & unreliable they are. If you want better odds of getting on the bus it does help to stay in the preferred rooms. This way you get picked up right at the lobby building (Old Port Royale / Centertown). For me… If I was going to get on the bus, I’d just walk the extra 5 - 7 minutes from my Trinidad South room to the lobby pick-up spot.
Again, I’m excited to try out the Skyliner to see if this is better. However, in “normal” times I just take an Uber / Lyft and get dropped off at / near the parks. Totally worth the $10 - $12 IMHO to save that time and cheaper than renting and/or parking a car at WDW.
IMHO - It’s pretty typical QS food. Nothing special I would plan a meal around, but it’s not terrible either.
The reason I love CRB is because I can get a clean & quiet room at a decent price and the rooms have been recently updated. You don’t get the large groups of sports teams / cheerleaders & etc… that you deal with at the All-Star Resorts that run wild.