"People are paying a lot of money to use the facility," she added.
"We want to make sure people paying this money had a facility that was clean and open and continue to use it in the future."
The Lake Pavilion is a glass-walled venue overlooking the waterfront and hosts hundreds of events every year. The centre is expected to bring in more than US$240,000 in revenue for the city this year.
Rockwell says patrons and staff should not be expected to walk in the midst of sleeping people when exiting and entering the area.
However, not all homeless people are kept away by the children's tunes.
Illaya Champion, one of the homeless people who often uses the events centre patio, says he will continue to sleep in the area, despite the annoying songs.
"It don't bother me, I still lay down in there. But it's on and on, the same songs."