They will give you 1 week to get ready, fly you in to ORD or MKE. Then a driver will you up and drop you to your hotel. Those drivers are very nice, you can get lot of local info from them. On the day of interview you have to check in at the security and leave your bags there. It is a all day interview including lunch interview. So always be on your best behavior and be professional. Even during lunch they will ask questions but it is more 'get to know you type" questions. I met with 9 interviewers for individual and group interviews, including 1 hour research presentation.