LAX for example:
Wednesday 06/28/06 Los Angeles, CA, Los Angeles Airport Hilton & Towers 5711 W. Century Blvd. Los Angeles, CA
1:00 PM - 5:00 PM (Presentation will begin at 1:30 PM)
*Bring your resume and copy of your current First Class medical, pilot license, drivers license and passport.
Id say, it would be over at 5PM or slightly after.
About 7 years ago, I attended the SFO roadshow.
The day I attended, about 50 pilots in the typical blue/black/grey suit showed up. We were put at tables, greeted, and given two written exams. Following the written exams, there were personel interviews for those who passed the written exams. If my memory is correct, the entire event last just 2 to 3 hours. There were many who did not pass the writtens, did not do much pre study, and many who didn't pass the HR portion. If you attend, I would know your stuff cold. If you intervew and dont make it thru a portion, then you can re apply in 6 months. If you are accepted, they will send you a ticket to SLC where you will do your Simulator portion and CRM portion of your interview.
Good luck..but to be honest, it does not involve luck!