The most important counterargument to address when arguing for the park to stay open later in the evenings, especially in front of the city council, is: "Keeping the park open longer would cost the city more money and funds might need to be taken from elsewhere to pay for it."
This counterargument is crucial because city councils typically operate within tight budgets and are concerned about financial implications. Addressing this point effectively can help alleviate concerns about costs and show that there are potential solutions, such as seeking sponsorships, grants, or community donations to support extended hours, making it a pivotal argument to counter.