Now for the important stuff: when do the bars close and what's the ratio of red headed lasses?
Pub closing times vary, I don't think they'll be open after 1. There are late bars in the city centre that will stay open till later.
As for the red headed lasses, the ratio is small unfortunately!
On pubs in Ireland....we don't tip in pubs. Bar/restaurant staff are paid well here I believe compared to in the US. They will certainly appreciate it (!!!) but it's not a done thing. Same goes for taxis. Tipping is viewed as voluntary in Ireland.
10% in Restaurants would be considered a good tip. Some restaurants add a 12.5% service charge to the bill (particularly for a group of 6+), that's considered the tip in this case.
If anyone has questions, quote this and I'll try to answer!