Venue in Dublin for an evening party

Hi all, never thought that I'd end up posting here

We're getting married later this year. We don't have a huge amount of money to spend on a wedding, and neither of us are people who enjoy the traditional wedding with all of the fuss and expense that goes along with it. So it'll be a civil ceremony at the registry office, followed by a meal with immediate family, followed by some kind of party with aunts, uncles, cousins and some friends in the city centre. I'm just wondering if anyone has any ideas for a place in Dublin that could handle about 130 people (our absolute maximum, it could be closer to 100), possibly with the option of a simple buffet meal as a good few people there will have travelled. We're looking at the Odeon, the Clarence and the Morrison in the next few days - has anyone got any other suggestions? Any nice hotel or pub function room that offered reasonably good value would be perfect.