It's something that needs to be done. You cannot visit Dublin and not visit the Guinness Storehouse. It's overpriced, large crowds and not the best beer brewery tour I've done, but it was good to cross it off. The gravity bar at the top gives you a great view of Dublin but without and tables available and standing room only... you're best off going down the road to a few pubs to secure a seat and a cheaper pint of the black stuff.