T1 layout is poor and very congested around the check-in area. Check-in and security screening lines are quite long. Dublin Airport Authority charges 1-2 euro for a plastic bag for liquids and if you do not have the coins you have to try to find change. Long walks to many gates and shopping is very poorly laid out just after security gates in T1. If you are looking for your VAT refund you have to make your way to Terminal 2 after security which will take 30 - 60 minutes round trip providing there are no line ups at the VAT desk. When arriving in Dublin Terminal 1 security is usually quite good but a fairly long walk from the gates. The baggage reclaim area is very dull and depressing and the exit signs are extremely confusing. This is not very good as this terminal was renovated within the last several years.