The Point Depot, sometimes referred to as the O², is only about 1 mile from the centre of Dublin city. There are various ways to get to it. You could walk to it. You can get a Luas tram to it. You...
That can depend on traffic. In good traffic, in can be done in about 15 minutes. At rush hour it will take considerably longer. Taxis and buses can do it quicker in rush hour than regular traffic...