Best experience: Everything about the vast majority of my stays at the CBR and Polynesian.
Worst: During my most recent trip to CBR there was a convention group staying there that had its own bus service to the Swan and Dolphin. The motor coachs idled in the guest parking area right outside the rooms 16 hours a day, from 6 am to 10 or 10:30 at night. When one pulled out, another one would pull up. It was incredibly disruptive, noisy and unpleasant. I love the CBR because it is a peaceful lovely retreat and I hated being there with the constant very intrusive noise. The buses even honked their horns. I asked to be moved but because it was MLK weekend, there were no other rooms. I couldn't wait to check out.
I sent an email about this to guest communications, asking that they consider having such bus services run from the food court or other public areas rather than immediately adjacent to the guest rooms. I haven't heard anything back, but I understand it takes some weeks for them to respond. I have to say as much as I love the CBR I wouldn't go back if I thought that would happen again.