Depends on the look you are going for. Irish Pub would obviously be more alcohol related - you could get some of the old Guinness posters and put them on the wall, display some pint glasses, etc. The cottage theme would be a bit more subtle.
Personally, I don't know if I would want my kitchen in the Pub style. We have an unfinished room over our garage that my husband eventually wants to do Pub style with a bar, pool table, etc. I think it might be more appropriate for a game room or something like that.
It's all about you though, not what we think.
What attracted you to this idea? What did you picture in your head when you decided on this theme?