Not so much a hack, but in the family campsite, there was a place serving all-day breakfast. When I say all-day, I'm talking 24 hours.
They had actual chairs and tables to sit at whilst you eat, and the food was decent. They served bacon, sausage, egg, hash browns and beans for £9 as well as some more afternoon/evening food such as burgers. Their milk was also only £1.50, compared to the £2 everywhere else.
The name of the actual place escapes me now, but I stopped in there on Saturday after a shower at Kidz Field on the way back up to my tent. It was possibly the best thing I'd eaten all week. Felt like having an actual meal.