Hi,
we have just returned. Twighlight check in is all very well, BUT, when we used it a couple of weeks ago round 5pm we wished we hadn't.
When we arrived to go through security, we weren't told the flight already had a 6 hour delay (if you checked in after 7pm at twighlight you were told )- so spent 7 hours in the VERY CROWDED departure lounge - only then to be told it was another hour's delay, then cancelled due to flight crew times being too long!!!! It snowed that day - so they blamed it on the snow...... mmmmm...
Moral of the story..... If you do twighlight check in, make sure to go by the desk in the morning anyhow to check on the actual departure time....
Tessa