The family that says the Coogee Bay Hotel served them gelato containing human faeces will today demand to see the hotel's CCTV footage in a bid to identify the culprit, the family's lawyer says.

The lawyer, Steven Lewis from Slater & Gordon, also rubbished newspaper reports the family had links to a rival pub as a "Kevin Bacon ... six degrees of separation [defence]" - a reference to the pop-culture belief that any actor in history can be linked via their film roles to US actor Kevin Bacon.

The Whyte family Credit:Steve Lunam

"My question is: 'Did Kevin Bacon put the faeces in the ice-cream?' " Mr Lewis said.

Stephen and Jessica Whyte, who were at the hotel to watch the NRL grand final, say they knew instantly that a complimentary bowl of ice-cream served to them after they had repeatedly complained to management was more than just gelato.