As a fairly regular on the DUB/DXB there is no rhyme nor reason (from my point of view) to which concourse you arrive into - last 4 times, 3 different concourses and 1 remote gate. However, with your stopover time it won't really matter, at least you get a good view of the airport.

With such a long layover I'd recommend lounge hopping - the experience in the F lounge in A is very different to the F lounge in B - my preference is A but could see how others would prefer B or C.

After an F flight I always regret not properly spacing out the food to properly sample the food and drinks menu - I eat too much then am full! I'd say just to think it through and have a look at the menus online before.

The lounge in Dublin is awful, but the rest are amazing.

Enjoy the benefit of the euro rate! Coming from NI I often take advantage of the cheaper ex-DUB fares plus the euro conversion.

Have fun!