The oysters she grows will be in abundance at this Sunday's Staddie Oyster Fest, but Marilyn said her husband and fellow grower, Kevin, did not have to worry about her pinching the produce.

"I don't really like oysters," she said, amidst laughter from fellow growers preparing their wares for the festival, to be held at the Sharks Allsports Club at Dunwich on North Stradbroke Island.

"But I do know a good oyster when I see one and ours are by far the best, grown in the pristine waters of Straddie where we've never had a pollution scare, like some other places."

While not competing in the oyster eating or shucking competitions, Marilyn keeps the records for fastest times going back to the beginning of the competition.

"The record at the moment is two minutes, 39 seconds to open 30 oysters, which is a lot faster than any of us growers can do," she said.

The free festival boasts rides, a jumping castle, live music from local band Shag Rock and mountains and mountains of Straddie seafood as far as the eye can see, with bargains like a fresh dozen going for as little as $11 and bottles of 30 oysters and a variety of other local seafood for sale as well.

The Straddie Oyster Festival will start at 10am, running until about 6pm. Entry to the festival is free, but festival-goers are encouraged to book their Stradbroke Ferries tickets in advance on 3488 5300 to avoid disappointment.

Residents of the Southern Moreton Bay Islands can also book tickets for a special BITS service on the day, stopping at Russell at 9.30am, Lamb at 9.40am, Macleay at 9.45am, Karragarra at 9.50am and Coochiemudlo islands at 10.10am.

The return ferry will leave Dunwich at about 4pm, with tickets $12 and bookings through the club on 3409 9216 or by contacting Jan on 0428 357 976.

Fredelle Briggs, of Victoria Point, is the winner of the Bayside Bulletin's Straddie Oyster Festival package. She will have free transport to and from the festival on Stradbroke Ferries with champagne and giant seafood and oyster platters for lunch for four .