You are going to see horrible reviews of all of the resorts.
I was nervous about staying at a Value resort from all of the talk about how horrible and tacky there were. Then I stayed at Pop Century and Dec 2004 and had the time of my life there.
Vacations are really what you make of them. If you like the theming of the resort , you'll probably like it.
I've stayed at CR, POR, POFQ, Poly, Pop and will be trying AKL in May. I've never had a terrible experience at any of the resorts. Youc an not control who your resort neighbors will be. You are just as likely to be near a loud obnoxious group at All Star Movies as at the Grand Floridian, no matter what anyone tells you. Case in point, I had an obnoxious loud family near me at Poly in 2002. They were the loudest people I have ever witnessed. Meanwhile, my stay at Pop Century was quiet as being in the middle of nowhere.
You may hear water running/toilets etc in any of the hotels. I don't think I've ever stayed in any hotel, anywhere, ever where I did not hear water running. That's just what happens with shared pipes.
As for the bus service, I've never had bad bus service anywhere onsite either. If you try to avoid traveling during peak times, you should be fine.
Have a great stay!