It all depends on what your looking for...
Since you have no kids in your party, the ranchos may interest you even though they are the farthest away from the main building. They are more secluded than the rest.
Cabana 8a is very close to the main pool area and bus stop #4. A 5-7 min walk to the food court.
9b is next door to the main building, very close to bus stop#1 and a very short walk across the wooden bridge to the main pool area.
Cabanas 8b and 9a are inbetween the 2 mentioned above so they would work as well.
Rancho 7b is next to 8a so would also be a viable choice if the cabanas are full.
Casitas 1 & 3 are close to the main building.
Casita 5 is close to the Dig Site.
The Pepper Market is not you average food court. Some say it is hard to navigate. Maybe because we have been there some many times, we don't find it difficult at all. My DD has been eating there since she was 5 (10 now) and she loves it. She feels so independent when she can go up and pick something out and get her card stamped. Don't be afraid to ask for anything either. My nephews last year would ask for just plain pasta because there were picky eaters.
When you enter the Pepper Market, you will notice it's not your average food court. This is Disney's first new style, "interactive" food court on property. It serves breakfast, lunch and dinner daily. You choose your meals in a Mexican market-style set-up while walking from station to station and talking with the chefs. You are seated by a host/hostess and everyone in your party receives a ticket. The host/hostess will take your drink order. You are then free to stroll around the food areas, choose what you want to eat and receive a stamp on your ticket for each item you get. If you don't see something you like, ask because they will mix and match items for you.
At the end of the meal, you present your ticket(s) to a host/hostess and pay as you leave. 10% gratuity is charged automatically to your bill so be sure not to leave an additional tip on the table. If you feel the 10% was not deserved, speak to the host/hostess when paying and it will be removed. The Pepper Market is open 6:30am - 11pm.
Take out meals are not charged the 10%.
You'll love the main pool area. Try a margatrita and some nachos while sitting pool side. Or maybe a game of vaoolyball on their sand court.
The transportation in one of the best. CSR does not share bus services with another resort and being a convention resort, often leaves the buses not as crowded as others.
Check out my website below for more info & photos on CSR.
Have a great time!