We were at CBR last month, and were in Trinidad North. We were in building 31, and were very close to the food court and the bus stop for TN. I think we were the 4th or 5th to get off the bus. I don't think you will be able to be both really close to the food court and the first to get off the bus. I am sure someone more knowledgeable in the resort can tell you if there is a better choice than Martinique or Trinidad North, but they are definately the closest to the food court and theme pool. I had a 5 & 6 yr old with me, and the few extra minutes on the bus was worth it to be that close to the food court.
Happy Planning!