The Kid's Basketball league sponsored by FUMCR and The YMCA has a young kids division called the Small Fry's. This is designed for kids ages 3-4 years old. I think it will be important for the photographer to get down on the ground to take many of these shots. It will be an easy temptation to stand and "shoot down" on these young ones. Think of ways to get on their level to show their perspective. Perhaps shoot UP at some of the adults?
There should be lots of parents and fellowship at this event. Get lot's of smiles and laughter!
Upload Link: http://fumcr.smugmug.com/upload/CMzVrc/smallfry