I'd say Saturday, just because that tends to be the big 
day for most cons and more dealers try to make it to 
their tables for Saturday, when they expect the most 
business. The Dealers' Room is probably most packed 
on Friday, when it is opened, and Saturday, throughout 
the day. If you park yourself in line for the Friday 
opening, you just might get lucky. It's hard to say. There 
weren't too many cel dealers at BAAF last year though. 
And yes, you have to buy an entrance pass even if you 
only want to go to the dealer's room... $15 for a half-day 
pass isn't so bad.

Still, overall, I think that this year's BAAF will be a good 
one. I have a feeling that there will be a few licensing 
announcements since Otakon was somewhat dull as 
far as that was concerned (all that "we've just got a few 
more papers to sign" and "no comment" stuff... pfft). I'm 
looking forward to it all. Anyway, just my thoughts... 
gleaned from my own personal experiences! ^_~

/t.