Yeh you would have to pass your whole book to your friend for them to get in, so make sure its someone you trust to give it back if you do! Noticed that 'no book, no entry' signs have poped up arround the ground now so guess thier really going to enforce this now.
Been in the soulth for since I've had a season ticket but am seated in the NE quadrant now - hoping you can 'downgrade' your ticket also so can go in with my former season ticket holding friends once in a while, when they can actually be arsed to make the effort (and I do hope some of them read this
)