Stayed a week at the Gums with my daughter ; probably best if you had a vehicle to get around, although we got there easily enough by taking a train from Airport to Eagle junction and then changing to train to Caboolture - from there a bus to Briebie : total cost for us both around $40 and took about an hour.
The Gums is on the quiet estuary side of bribie, just over the bridge. Large shopping mall with all thats needed about a 15 minute walk - while magnificent surf beach at Woorim, other side of the island, about a 15 minute drive.
We drove to Caloundra one day, about an hour - also to glass house mountains and the Steve Irwin Zoo, only 30 mins from the resort and well worth visiting. We stayed with a friend/resident in a two bedroom aprtment - very spacious, lovely surroundings, pool tennis court etc. Birds wake you up around 5;30 - but very pleasantly ! Rate it a great place to stop particularly with children provided you have a vehicle and also a good base to explore that region of queensland. Tony and Joy the managers most helpful and friendly, thanks to them and their family for making us so welcome.