More than once in my youth in the west which is now forgotten (kudos to whoever catches that reference), I attended a science fiction convention where the guest of honor was someone I’d never read. Like, for example, in 1984, when I couldn’t understand why everyone at the Worldcon was so excited about this whole “final encyclopedia” thing everyone kept talking about. I mean, an encyclopedia? Come on!
And so I didn’t bother to attend any events with guest of honor Gordon R. Dickson, author of the Dorsai series. A few years later, I could only kick myself for my prior ignorance.