GLADSTONE'S giant slide was a giant disappointment for some families after there was no water running down the 300 metre inflatable attraction.
Trevor McGrath was among the hundreds of parents who lined up to get a refund despite waiting for more than three hours with his children booked in for the 10am session.
"We've been here since 9am, sweating in the sun. It's pretty disappointing," Mr McGrath said.
"It was a good thought but it has been badly managed and the kids are pretty gutted.
"We can't just come back later - that's why we booked the 10am session."
Wayne Martin paid for two kids and said the whole event was badly organised.
"People weren't happy here this morning," Mr Martin said.
"Why would they be when there only a splash of water on half the slide."
Organiser Brian O'Shea, who travels with his giant slide around Australia, said there wasn't enough water on the site when the first sessions were set to kick off.
A water truck was brought in and security guards from Mieplace used their hoses to help keep the slide wet.
At 12.45pm Mr O'Shea said the water issue would be resolved by tapping into the water mains and said the slide would stay open into the evening.
He said some parents were angry and took refunds while others wanted to come back for a later session.
"We will be here until 11pm if we have to."