Don't get why when you arrive from a flight from the UK you need to go through a freakin' passport check in Dublin. I thought EU unity was supposed to take care of this silliness.
Don’t go through into the US Pre-immigration area until you really have to; there’s nothing in here! No proper shops, duty free and no DragonPass lounge. Once you’re in, it’s like you’re in the US.
They have self service passport gates, but unlike Heathrow you have to queue in the same line as people using the staffed booths so you save zero time.