- CANCELED - 2020 LMC Annual Conservation Dinner Features Fascinating FishesApr 20, 2020, 5:30 PM – 8:45 PMMarriott Northeast, 9664 Mason Montgomery Rd, Mason, OH 45040, USADue to concerns over the Coronovirus this year's Little Miami Conservancy Annual Dinner originally scheduled for Monday, April 20, 2020 at the Marriott NE in Mason, Ohio is CANCELED.