I haven't been to the studio since February, but reading the reports from everyone else who's been this season, I can give these recommendations for arrival times:
If you want to be first in line, I'd probably get in line around midnight, since that seems to be the time the first person usually shows up for a 'normal' taping.
I've shown up as late as 3am and gotten in the front row, and nothing I'm hearing would indicate that this has changed, but I wouldn't count on it happening every time.
If you want a good seat in the second or third row, you're probably looking at 4-5am.
If you just want to get in the studio, period, it really doesn't matter and you could probably get in at 9am, the way things have been going this season.
I'll leave it to the rest of the crowd to give any further suggestions (and as a note to Willy and Co, please keep the negativity to a minimum. We don't want to be dream-crushers here.
)