Hi
I've been going for about 10 years. I usually go on Friday, but cannot see everything in 1 day. I've taken classes there also and they lasted all day. I would say take 2 days for looking and the rest for classes. The classes fill up VERY quickly so don't wait. It is very large with a lot of vendors worth visiting. It is a wonderful show. If you stay in a hotel, you won't have to fight for close parking. Your feet will be killing you by 3 pm. It is all worth it!!
Verna