We've stayed at the CBR two years in a row and really enjoyed it both times. The rooms at the CBR are 340 square feet whereas the other moderates are 314 square feet. With your three children, that extra space will come in handy.
Most rooms have two double beds, an armoire, table and chairs and a bench that has a storage area beneath. There are two sinks at the CBR which comes in handy when everybody is getting ready at once. There is also a dorm size refrigerator, an iron, ironing board, coffee pot and hairdryer.
The CBR is a large resort but getting to and from the food court/restaurant/
store, etc. is easy. The walk around the entire promenade is just 1.4 miles and Old Port Royale is in the middle, so, even if you were in a village furthest from OPR, you're never more than half that far away.
There is also an internal resort bus you can take if you don't want to walk.
You could also request a preferred location which would put you near OPR.
Each village has their own white sandy beach complete with hammocks and beach chairs. Some of the beaches have volleyball nets and some have small playgrounds. The villages also have a quiet pool and, with the rehab of the main pool, they are adding slides to the quiet pools.
Near each village pool are laundry facilities. With three little ones, you might find a need to wash a few items. If you do, you can wash your clothes while sitting by the pool.
In the middle of the lake, there is a small island. On the island, you will find picnic tables, benches and hammocks. Nice place to relax.
The food court at the CBR has a pretty large variety of foods to choose from and have something for everyone. Pizza, deli sandwiches, burgers, salads, chicken strips, turkey, roast beef, veggies, etc. At breakfast, you'll find a variety of breakfast meats, omlets, waffles, etc.
One day at lunch, the castmembers held an impromptu limbo contest for the kids which delighted them all.
The store is divided in two with one side selling the more traditional Disney merchandise such as t-shirts, hats, purses, watches, jewelry, souveniers, etc. The other side had beach/tropical themed items and lots of pirate stuff.
The CBR is centrally located and it never took us long to reach any Disney destination. Our trip to MGM took only 11 minutes and that was from the time we boarded until the time we pulled into the MGM bus station.
The buses ran efficiently during our stay. We never waited long for a bus and, at times, there were two and three buses at the bus station at once. I think the longest we waited was about 20 minutes and that was because we jjuusstt missed the Epcot but. This also wasn't during peak time either. It was about 10:30 or so. Later than most people are getting to the parks.
The ride to the Magic Kingdom didn't take long at all. We rode the bus over to Magic Kingdom every time and we liked the fact that our bus driver would drop us off as close to the park entrance as possible.
Hope this information helps you in your decision making process. If you have more questions, just let me know.
Here are some pictures from our last stay:
The CBR entranceway:
Landscaping from the parking lot view:
A couple of Martinique courtyard views:
Pictures of the Martinique grounds and buildings:
Disney bus:
CBR lake:
Some of the flowers growing on the CBR grounds:
Old Port Royale (picture taken from the parking lot so it's not so good)
CBR castmembers doing the limbo with the children:
One of our many towel animals received during our stay: