I attended recently with one other applicant in MIA. I showed up at time told and 777 sim was full so we went to a 747-400 sim. The sim time is basically to display basic flying ability with a heavy aircraft. I enjoyed the sim experience. Testing on 5 areas in classroom for like cognitive, memory, aviation knowledge. Nothing really to study for. Took about 4 hours. We were told to expect a early May response on invite to DBX. Both of us wore suit no tie. Jacket not even necessary. They are looking to hire 500 this year.