We're arriving at Dublin Airport at 5:30am on a Wednesday morning in June - I assume we won't be able to get into our hotel/b&b for several hours - what do we do with ourselves, and our bags, for a few hours? Thanks!
Most any hotel or B&B should let you drop off your bags. Check with them to verify this. Then go find a place to have breakfast and stroll around.
BG is right. Go the your hotel/b&b and ask if you can stow your stuff - I've never received a "no" to that request. If they're not full up, they might even let you check in early in the morning. If your scheduled Dublin arrival is 5:30, you won't get to your hotel/b&b until at least 7:00 and maybe later
Drop off your bags and get a full Irish breakfast! It's a great cure for jet lag.