And more expensive unless you book far in advance, travel on Monday afternoon, Tuesday, or Wednesday, jump through all their hoops, and have a prepaid MasterCard.
Travel time city centre to city centre is more or less equivalent. We had a competition at work a while back involving a race from St. Stephen's Green to the Grand Parade where one team could only travel by car, another by bus and train, and the third by bus and plane. The train team won handily.
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