Well, I've helped run an annual 3-day sf/f/horror convention for over 40 years, and attended several World SF Conventions. I've met a fair number of authors, some of them pretty famous. Most are fine, some are or were less so. One came to our con, had an apparent great time, then trashed us later in print, so, he was ridiculous. Another was fine with fans but a PITA for us because he was drunk most of the time. They're humans, as fine or as fucked up as any bunch of humans is. I'll say, Jack and Joe Haldeman were great. Robert Block was fantastic. David Gerrald was a lot of fun and gave one of the best Guest of Honor speeches I've ever heard. Robert Zelazny was terrific.

But, yeah. Orson Scott Card was a shit to me. His wife made him apologize. It was likely just before he went off the rails into zealot territory.