CBR is definitely very spread out. Our first stay was almost 10 years ago and we were placed in Trinidad South (before it was all Pirate rooms) which is the furthest village from Old Port Royal. There were very pleasant walkways around the lake and beaches, however, even at a brisk pace it was still about a 10 - 15 minute walk. HOWEVER! That was only to the food court, gift shop, and main pool.
Each village has its own bus stop that is very convenient to all rooms and a small quiet pool (no themeing). The preferred village/buildings are all of Trinidad North and part of Martinique. At this time, these rooms will still be close to the pool but they will also be close to all the construction starting this month. Jamaica and Aruba are semi-close to the main area being just across the lake and connected to the main area by a bridge (especially buildings 45/46 in Jamaica and 51/52/53 in Aruba). The bridge passes across Caribbean Cay, a quaint little island -- very tropical -- where you will find a playground and quiet places to sit and relax.
While the resort is very spread out, walking is very pleasant. The grounds are beautiful and even the longest walks (10-15 mins) don't feel that long. If you have mobility issues or just don't like to walk, you may want to check if there are any preferred rooms available, if you want to be close to everything. Otherwise, you can just use the bus stop and quiet pool nearest your room. Also, with the construction going on, there will be grab and go markets located in 3 of the villages as well as drink stations for the refillable resort mugs throughout the resort. The list of these exact locations has been updated on the first page/post in this thread as I can't remember them all right now.
I do hope you enjoy this resort as much as my family and I do. Every resort is different and has its own personality and you just have to keep trying until you find the one that best fits you!