According to the PS schedule (http://sps-schedule.web.cern.ch/sps-schedule/schedules/ps/2017/106/PSDetailedSchedule.pdf) we will have the first beam.
For the first "official" beam all students will be invited to T9.
The rest of the day can be filled with a visit program (ATLAS, SM18, AD, CCC, SC, etc.) and with free time.