Don't get me wrong here, I enjoyed Dublin and would revisit but did make some mistakes along the way.
We booked our hotel some time ago, Days Inn at Rathmines, which shut down last Monday, Days Inn did rebook us into the Talbot St hotel, 77euros a night. Whilst in Dublin we did see rooms for 15e a night
Ryanair did provide a service, and we did get to Dublin and back for £75 each return, but after being messed around and then the delays this put a downer on things, we were expecting to arrive in Dublin at around 9pm, instead we got there at 00.30am, so did not have the time to enjoy a pint or two.
The taxi was a rushed decision, we though that getting the bus early(6.15) on a Sunday morning would be difficult, so opted for a taxi, which took about 10-15 minutes to get to the airport, next time it will be a bus.
Prices of food/drink cannot be avoided, I know that any capital city will be expensive and accept that, but cannot expect the fact that every concert venue or cinema you got to will fleece you senseless if you want food or drinks.