Hopefully my schedule is open around that time - never been to an AGA convention, but I think I'll be able to learn quite a bit from it, plus meet folks and put faces to forum names. I actually met Kris Weinhold last weekend here in Madison, WI; he gave an excellent talk on the high tech approach to planted tanks and I definitely learned something.
Side note: Does anyone know when the AGA Aquascaping contest will open?
I know the contest closes sometime in September usually. Isn't it open for entries now?