This fall, 350 fans of Mets broadcasters Keith Hernandez, Ron Darling, and Ridgefield’s own Gary Cohen turned out to support Ms. Cohen’s charitable Foundation. With the sun shining down on Citi Field’s Bullpen Plaza, these fans — GKRers, as they’re known — got to experience a special day featuring unprecedented access to rare memorabilia, N.Y. Mets personalities, coveted raffle items, and the fellow fans they’ve come to call dear friends over the years.