Kingscliff is a fairly small country town on the coast, probably about 15 minutes south of the Queensland border. The place we stayed at is B's parent's holiday flat, which is on the same street as the beach. The beach there is incredibly pretty:
The sand is very soft, and a fair bit paler than the sand at Sydney beaches. We swam every day, sometimes multiple times a day. We bought body boards up there and enjoyed catching the waves. Incredibly hard work though, there was quite a strong rip, so trying to get out to the waves was good exercise!