We love CBR!!! We normally rent a car so I could not tell you much about the buses, but there is an internal bus that will take you around the resort.
Olde Port Royale is where the food court, store and main pool are. The villages to request that are nearest are Trinidad N. and Martinique which are preferred room prices. Aruba and Jamaica are a short walk over the bridge. Each village has it’s own quiet pool, beach, playground and laundry facilities.
The resort is close to EPCOT, DHS, DTD, BW and TL.
Also, request a ground floor room as stairs are not close depending on where your room is.
Have fun deciding and have fun planning:)