Wesleyan’s friends and neighbors in the community are invited (along with students, staff and faculty) to enjoy Middletown Day on campus Sept. 21. A menu of family activities is planned for the afternoon, leading up to the first night football game in the NESCAC, as the Cardinals face the Tufts University Jumbos in the season’s first contest. From 2:30 until about 4:45 p.m., Freeman Athletic Center will be the scene of games, live music, poster-making and balloon art, a bouncehouse for small visitors and various farmers’ market vendors. Free popcorn and beverages will be offered as well. At afternoon’s end,…