We were in the Jamaica area, building 4325. We were around the corner from our pool and laundry, and about a 5 minute walk from the main pool and food court across a bridge.
If they are charging more for those areas, I wouldn't pay it. There is a internal shuttle that runs the entire CBR about every 10 minutes. We actually had the shuttle pass us 3 times while we were waiting for the bus to the MK.
The main pool is very crowded at night, however in the middle of the day we almost had it to ourselves. My 7 yr old son had a blast there. It is a beautiful resort.
Let me know what other questions you may have. You also get a lanyard and pin set, and one other choice to use at Disney.
Are you using the transfer package offered by Disney to the port?