When I was an assistant prosecuting attorney, sharing hotel rooms at seminars was expected. Once I was selected to attend a forensic evidence seminar in LaJolla, CA. Two of us were in a room at the Marriott where the seminar was held, but he was a good friend, so no big deal. Every year we attended a state prosecutor association seminar for CLE (continuing legal education) credit. That was in a summer resort area, and a hospitality suite was available, so several of us sharing a room was no problem.