So someone's trying it in Dublin! I remember an English bloke in '14 who got some financing for the "Nxt Cafe" in Shoreham.

http://www.theargus.co.uk/news/business/11268661.First_cafe_in_the_world_to_accept_crypto_currency_Nxt_Coin/

Last I checked, it had been struggling. The associated Website and the Twitter account for it have both gone dark, so it's likely given up the ghost.

Here's hoping that the luck of the Irish will kick in for this cafe!