Are you saying that one of the ushers guided you to a seat at intermission of Book of Mormon? I've never seen that.
I've done the standing room twice at BOM, and each time the employees and ushers were super strict - lined everyone up for a briefing before the show's start: said under no circumstances could anyone take a seat, do not even try it - "we are sold out", must stand the whole time, you cannot sit on the ground at any time, do not attempt to sit on the stairwell during the show that is not permitted, you must clear the entire area and railing at intermission because people must get through to the bathrooms. kinda made us feel like second class citizens, but hey, that's what standing room tickets are all about , if one can't deal with it, pay more money and buy a normal seat. as far as I'm concerned, SRO people are the true theatre goers, the one's committed to getting in and enjoying theatre. But I don't know what employees were working at the Eugene o'neill theatre on the days the other people in this thread went, they weren't there when I've been there.