Yeah I've been down there a few times now. Friendly crowd and plenty of room to play. Need to watch the tide though, if you drop your kite on an outgoing tide relaunching can be tough, even in the shallows. The water rips through at around 5 knots and can bury your kite under water. Saw a guy today that ended up on Bribie, thought it was intentional until his cheese and kisses turned up with a worried look on her face asking if we knew of his whereabouts.
Incoming tide and a southerly is the best bet at GB.