Luckily you have plenty of options for a beach side coffee shop. I like an early morning walk before it gets too hot and a quick swim with the children and then coffee please.
Most of the local beaches have a coffee shop options. From your usual lattes to toasted sandwiches, cocowhips, smoothies, fresh juices, fruit bowls, acai bowls, etc. Take your pick from Blue Door, Swells, Dixon Park weekend coffee cart, Newy beach Estabar, the kiosk at Newcastle beach, and of course Swell at Nobbys.
These places are ultra casual, child and pet friendly. You might just see some dolphins too.