Went to Dublin last weekend to celebrate over a year with my Girlfriend.
If you are thinking of going to Dublin I do recommend staying in the hotel we stayed in called The Clarence Hotel. It's very spacious, fair priced, it backs on to Temple Bar, they've got a great bar and restaurant, and to top it off it's owned by U2 and they're known to regularly frequent the bar when in The City.
Drinking & Nightlife
Temple Bar is everything you'd want from a drinking street in Ireland. Pubs and Restaurants everywhere. Everybody is overly friendly. Drinking is expensive. Even for someone that lives in London I thought the drinking was expensive. You're looking at on average around six euros ninety for a pint of Guiness. If you go with a female tell her spirits are a no no. They charge you for the vodka and then the drink so they can cost more than nine euros. Despite being a Rugby location watching any sporting event was easy as they're not bounded by the shitty UK laws. Every other pub had the football and the boxing on when it was Saturday.
Tourism
The Guiness Tour was as good as you'd expect. Was pretty surprised you could only have one Guiness with your voucher so you had to choose between pouring your own pint or getting a drink in The Gravity Bar. But they made the tour as good as they possibly could make it. We also visited Trinity College, The Goal, and the shopping centre whilst we were there. Trinity College felt a bit expensive just to effectively look at a scroll but the Victorian Goal was a great visit even if it was a decent walk away from the Temple Bar Street. If you're going away as a couple for more than three days I do recommend the coach tour around Wicklow Mountains. It took a whole day but that was definitely the highlight from the tourism perspective.
I'd definitely recommend going. I'm not really one for sightseeing or walking but Dublin was a great experience full of interesting people and places which made it an enjoyable experience. Just remember what I said about the spirits.