Found this in the Irish Times
The golden rules Shop on a Monday, Tuesday or Wednesday morning, when it’s quiet. Under its planning conditions the Dublin store cannot open before 11am on weekdays.Posted by whykay at January 28, 2009 08:41 AM
Avoid weekday afternoons if you are driving, as the Dublin Ikea has to charge for parking between 4pm and 8pm to limit congestion (another planning condition).
If you have a complicated purchase, such as a kitchen or wardrobe, do as much planning as you can online.
Get your list of items from the expert in the area as soon as you arrive and go straight to the warehouse to load them on a trolley.
If you want to browse, now is the time, but a bit of discipline is required to avoid the “I bought it because it was cheap” scenario.
When you get your stuff home read the instructions before trying to assemble it. When put together properly, the furniture is great – durable and solid.
If all of this sounds like hell in a flatpack then wait a year. The Dublin Ikea must provide an online ordering service within 12 months of opening. The service will probably be limited to larger items.