As ever, the Hot Springs Documentary Film Festival is a week-plus of films you’ll think about for years, plus parties you hopefully won’t regret the next morning. Highlights of 2022 include Mark Fletcher’s (“My Octopus Teacher”) undersea conservation tale, “Patrick and the Whale”; Kathlyn Horan’s “The Return of Tanya Tucker: Featuring Brandi Carlile”; Shaunak Sen’s award-winning tale of a bird hospital in polluted New Delhi, “All That Breathes”; Violet Columbus and Ben Klein’s portrait of Tiananmen Square massacre documentarian Christine Choy, “The Exiles”; and loads more, much of it with connections to the American South.