I'm planning a 7 day trip to Brisbane in late August. I have absolutely no idea what to see. I actually wanted to do Cairns & Great Barrier Reef but there's no direct flight from Singapore, so I was thinking of flying to Brisbane instead, spend a few days there, maybe take an internal flight to Cairns and spend 2 days (or 3). I would really like to do some diving at the Reef and get on a hot air balloon if that's possible.
I will be travelling with my mum who's in her mid-50s. So I'm trying to find some activities which not to taxing yet interesting. Someone recommended Grayline Tours. Any views? Also keeping my options open to rent a car.