I was just there two weeks ago -- you will LOVEEEE the CR!!
Yep, walk is super easy, about 10-15 mins. There is nothing like walking out the door and being on your way! Absolutely no waiting whatsoever. When we would leave MK for our afternoon break, we'd walk right up the monorail ramp and hop on, the CR is the first stop after leaving the MK. There was never a wait or long line to ride the monorail during the day.
Of our two stays at CR, we've never shared a bus with WL. On the way to DHS and AK, we would stop and pick up at the Poly and then GF. The good news about sharing the buses with those resorts is that the CR is always the
first stop on the way back from those parks! So, when you are at DHS until late in the night, it is great knowing that you will be the first one off as you are heading back home.
We loved our stays at CR and can't wait to return. We thought the transportation was fabulous. Some folks balk at having to switch monorails at the TTC when going to EPCOT, but for us it wasn't a big deal at all. It is so wonderful taking your resort elevator (in the cool AC) to the monorail and boarding it and being on your way.
How long is your trip? If it's a week or longer, have you considered a split stay? We've done two and LOVE them. They provide a great opportunity to try different resorts. When you can't decide between two resorts, a split stay is a good way to go.
I know you are considering AKL. I would like to try it one day. I think their pools might be more exciting and appealing to kids. Our girls LOVE to swim in pools more than anything, so we did our split stay between CR and BCV so that we'd have some time at Stormalong Bay. Our 11yo DD told me she thought the pool at CR was sort of boring. That wasn't great news to hear, but the fact of the matter is that it is DHs and my vacation, too, and we love the CR and wanted to stay there. And, in the heat of summer, we as parents wanted location, location, location to make going back and forth easier. We spent a day at Blizzard Beach during our CR stay, so lots of awesome swimming there! LOL!
Please feel free to PM me if you have any specific questions about the CR or doing a split stay. I'd be happy to answer.
Good luck with your decision! Your trip is going to be absolutely magical whether you stay at CR or AKL. Really, it will.