Very deffo no trianers and no exceptions. Well, apart from that one big crowd who were there lately. But the G made a point of announcing (every few minutes) that their rules would go back to normal once the event was over. It"s over = no trainers.
Cash games will be a tight squeeze at the start from what I remember too. Not sure where they"d put an extra table for it, but Tighty might know of a secret hiding spot he can post about later.