Just for additional information. On our previous B2B's we received a notice 2 or 3 days before debarkation day to attend a meeting in one of the Lounges. They explained the process. Our Room Attendant would ask us about it close to the last day and explained that he would get our room together first. On Turnaround day, we met everyone in an area...went through customs as a group, given our new cards and then released. We often went back to our cabins (just opened the gray doors and closed them behind us) until the group lunch.