This year (and next), with Worldcon at the first weekend of August instead of the North American Labor Day weekend, I don't have that consideration. And, with the health issues I'm having, I'm just as glad.
The dizziness is almost gone, but the double vision has grown worse. I'm having to squint heavily in my left eye in order to get both eyes to focus, and it's mainly easier to just close my left eye entirely. At Cheryl's urging, I will call my regular physician later today and see if he thinks I should see him (or some other specialist) about this, or keep trying to wait out the labyrinthitis.
Update, 11:30: Anyone just coming to read this one -- go read my next entry first. I do appreciate the messages of support, but there's no further need to tell me "get to the doctor" for I have a call him to him right now.
Update, 11:45: And now they've called me back. I found the message reassuring. Yes, my symptoms are potentially part of some pretty nasty problems; however, I don't have any of the other symptoms you'd expect in such a case, so the best thing is for me to keep resting and probably spend less time in front of the computer.