Instead Jack Pidik Park, at 5-Mile, will be turned in a car park for people who will then be shuttled to the centre if they want to watch the swimming, weightlifting and volleyball competitions.
He said people would have to pay a nominal figure to board the shuttle service.
Stewart said the parking area at the aquatic centre could not cater for the volume of vehicles expected there.
But he stressed the Games would be a success despite the concerns that have been raised in the media and parliament.
Stewart is adamant that all that was needed to deliver the Games would be ready.
He said since the Games Organising Committee was formed in 2012, it had been committed to its charter and there was no reason to think the country could not host an event that met the expectations of the PNG public and visitors.
He said the Games Organising Committee, working with the Venues Infrastructure and Equipment Committee, had made adjustments to the use of venues based on what they could deliver by the time of the event.
One venue in question is the Rita Flynn Netball complex which is unlikely to be complete by Games time.
Stewart said the netball competition would be moved to the Sir John Guise Indoor Complex and this would not affect other sports because netball would only need one court.
The other court sport that may be in line to use the indoor complex in Waigani is basketball.
“All that needs to be ready will be ready.
“All the elements needed to host events at the various venues will be built and ready to host games,” Stewart said.