Dublin Aiport Express Parking Reviews 

I have been a long time user of all parking facilities on and around Dublin airport.
My advice based on recent experiences would be to use Park2Travel rather than blue or red carparks that Dublin airport operate.
They use one bus service on a loop that collects from T1 and T2 one after the other. If the first pick up fills the bus, then your left waiting at the second as you won't get on the bus.
I recently landed at night with my family on a cool evening and had to wait for a 3rd bus to come by to get space to get on.
I'm sorry, but this is not the service I expected when paying for the service.
The travel time from the airport to Park2Travel is quicker also.

Car returned damaged and filthy dirty They sent me a vid of my car parked in some obscure area with the damage showing although this was after it had been driven by there people.
Late return of my car numerous phone calls to which they denied being late. Fortunately disproved this by sending a call log to them.
Offered me a discount on my next use of their services. I would not use them again even if it was free.