Vermont’s Barn Opera will be holding a British-themed New Year’s Eve bash full of festivity as it presents a semi-staged production of Gilbert and Sullivan’s “H.M.S. Pinafore,” streamed fireworks broadcast from London, and a traditional New Year’s countdown with the streaming of the Times Square celebration. The event begins at 7:00 p.m. ET, on December 31, 2021, with the London {…}