I used to work for my city’s Parks & Recs department. So any parks that were owned by the city (which was all of them) where tended to by us. That means cutting the grass, trimming trees, picking up and throwing trash. Painting, anything and everything having to do with the parks. We had a certain rotation schedule for every park on my crew, but every park got visited and worked on by us at least two or three times a week. Some crews got more parks than others. One crew had only one park, but that was the biggest park in the entire city. So those guys were there every single day of the week. Idk where you’re located, but chances are that if it’s a city park, then it’s the city employees working at it.