The carnival rides are already in place on what some call Hawaii Kai's great lawn.
Dominique Lopes-Miranda initially thought the new community event would be fun, but now she is wondering where everyone is going to park.
"I’m just a little concerned about the parking, because I come to the dog park often,” said Lopes-Miranda.
But users of the dog park aren't the only ones who could feel the squeeze.
There is the weekend famer's market, as well as recycling center and The Bus uses the area as a transit center.
The company met with the city transportation director Tuesday afternoon to try and secure the necessary permits for the park and ride lots next door.
"The carnival being on the great lawn is on a major street, in addition to two county roads, so we are concerned about safety,” said director Mike Formby.
But E.K. Fernandez said it plans to erect a six-foot high fence around the carnival area to make sure no one will dart out on the busy roads.
It also plans to hire off duty police officers to help with traffic control.
"This is a typical E.K. Fernandez event. We have not skimped on anything. We have 13 rides, our games, our food venders. It is just a different location," said Donna Smith, of E.K. Fernandez.
Rep. Gene Ward’s office said the event caught community leaders by surprise.
Smith said the company had not been required to meet with the neighborhood boards in Wainamalo and Kapolei where it hosts other carnivals.
“Hawaii Kai expected it and we were not aware they expected it," said Smith.
"It kind of slips under the radar because they don’ need an on street activity permit.But it is an off-street activity which affects local traffic so we are concerned," Formby said.
Carnival organizers are also trying to get permits from the state to use the lot at Maunalua Bay.
The state says it is willing to lease half of the parking spots but it also has restrictions since the lot is heavily used by boaters and canoe clubs.
Smith says the company is also trying to finalize a shuttle service from a nearby school to help with the parking woes.
Part of the carnival proceeds will go to a non-profit Hawaii Speed and Quickness run by Rich Miano-- a coach at Kaiser High School, although Kaiser is not sponsoring the event.
Miyano, along with property owner Kamehameha schools and E.K. Fernandez will be at the Thursday night meeting at the Oahu Club called by area lawmakers to explain their plan and why they didn’t inform the community ahead of time.