Take a Storehouse/Distillery Tour
You can’t go to Dublin without having a pint of Guinness and some Jameson Irish Whiskey. Both companies offer a tour of their facilities, and both of the tours are fun, informative, and more importantly : involve alcohol. However, it is a little redundant to do both, especially since they both cost around 20 Euro (don’t quote me on that). Unless your heart is set on both tours, I would suggest choosing one, and then just stopping by the other for a drink or to poke around the gift shop.