Attendees at the two-day Long Island Geek Convention at the Hyatt Regency hotel in Hauppauge socialize with other self-proclaimed geeks, play board games, attend panel discussions and Q&As, get autographs from sci-fi movie stars and show off elaborate costumes. On its first day, Saturday, April 22, 2017, organizers said they expect as many as 1,000 to attend.