If you are looking for some food, or an indoor play area, then The Valley Junction Cafe is one possibility. They have a play area that is inside the cafe, so you can see the kids while trying to relax. It is definitely aimed at younger children, but my seven year old is harassing me to take her there so I guess it depends on your child. The food here is delicious. You will have access to toilets.
Where is it?
It is located within the Caddens Corner shopping complex, which is at 68 O’Connell Street in Kingswood, NSW.