The next Association of Games and Puzzles International (AGPI) will be APR/MAY 2020 in the Washington, DC area. The next Puzzle Parley will be in Sturbridge, MA July 24-26, 2020.
http://www.gamesandpuzzles.org/index.php
http://www.puzzleparley.org/
Puzzle Parleys are where jigsaw puzzle collectors, cutters and just plain enthusiasts get together for one weekend. Founded in 1994, one is usually held every two years.
I attended the AGPI 2019 Denver convention last weekend and it was fun, fun, fun. Some great tours too! One at Liberty Puzzles in Boulder. Very impressive operation!
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