There’s a big reunion in Geneseo! To celebrate the 50th-anniversary season of the Richmond Hill Barn Theatre, director John VanDeWoestyne got some of the 2008 Dearly Beloved gang back together for this summer’s sweetly nostalgic revival. The theatre’s audience voted to add the show to the season, and, along with over half the original production’s actors returning, the plot features its own reunion in the form of a family wedding. Dearly Beloved must have been remembered fondly because Thursday night’s opening was packed.