Dang it Midgen, why didn't you ask this 1 year ago? My wife and I spent a week in Seattle with our 3 day Pax passes (they have 4 days now? nice). We couldn't justify going a second year in a row.
Possibly next year though.
You will have a blast. If you've never been, you will find there is a lot to see and do and never enough time for it all. Pick the panels you absolutely cannot miss and then line up early. This is the trick. EARLY.
My wife doubted how early we should line up for all of the panels we wanted to see. She had a time in her head which she thought was plenty, but I told her that it wasn't good enough. After sitting on the front row (or very near as you can get without being the Press) of all the panels we wanted to see, and being 10th in line to see Acquisitions Incorporated, she will never doubt my lining-up skills again. The trick is to ask yourself "how early should I line up to get a good seat?" and then add another half hour to an hour to that. That's the key. You'll find that most other folks think like yourself, so you have to increase that time.
I began lining up for
Acquisitions INC three hours before the show (before they let the line for the famous Japanese composer group in... Hideo Kojima or something like that). And I still wasn't first in line, but close. But within the first hour, there was already a line down the block. Within the second hour,
that line had tripled (every person in this photo, even the folks down by those trees way back there? yeah, they're all part of the same line). And the best part about being there early, I was one of twenty people
who had shade from the sun.
For a smaller panel, I'd line up an hour or hour and a half early depending on it's popularity.
It's also worth lining up to play some high profile games as well, not necessarily just for the chance to play them, but there were quite a few booths that would hand out Beta keys for trying out their games.
Anyway, let us know how it goes! I had a blast and I am sure you will too.