The site will deteriorate post-construction without an ongoing commitment to the maintenance. If this is not done, there is little reason to proceed with other maintenance practices. For high schools, we instruct to seed at any and every opportunity. While unlikely for these Frisbee fields, there should certainly be a spring and fall overseeding program. Aerifying and topdressing.
Athletic fields tend to be underfed.
In the spring, feed the grass with nitrogen. In the fall, feed the roots with potassium. Feeding will result in additional growth and require more frequent mowings. This access point might also be used for vendor truck parking, safety vehicles, etc. Parking Parking requirements need to be defined and adequate spaces provided.