I applied last week for a seasonal sales position. The open house took place in a hotel; upon arrival, you were given a basic job application asking for your past work history, education with a number on the top righthand corner. You would have to wait for your number to be called which usually came in groups of 6 (aka, 151-156, 157, 162). I waited a good 2 hours for my number before being led into a conference room with 4 other group interviews taking place at the same time.
My interviewer was very friendly, very engaging and extremely easy to talk to. There was a group of 6 of us; the interviewer asked about 4-5 questions that we all had to answer (questions posted below) before she told 2 to leave. The remaining 4 of us were asked another 2-3 questions before asking if we'd like to take part in a secondary interview.
The wait was another 30 minutes; at this time, the doors were closed and the remaining applicants were numbered in the near-400s'. A few dozen of us were left in the room (I believe they were hiring as the day went) and another group of 6 were called. The second interviewer asked about 3-4 more questions that were more in-depth and detailed. At the end, she extended the offer of employment to all 6.
I was told that the interviews for regular sales associate (not seasonal) were much more vigorous and subject to more difficult interview questions as well as a 1 week wait before a callback.