Originally Posted by
NotHamSarnie
It gets you fasttrack through Dublin airport security and through US security downstairs at the start of the US process.
However, unless you have Global Entry, you will be dumped after security into the general passport line for immigration in DUB which can be extremely long depending on which US-bound flight you're on. With global entry you go to the kiosk and it takes 40 s at worst.
It is, imho, worth getting GE if you are planning to do this even once.
You get through the entire US process in a few minutes and can spend your time in the lounge in DUB and get disgorged onto the domestic concourse on arrival in the US.
Yup, we both have GE so we are covered on that front.
Thanks for the help!