Even though it wasn't St. Patrick's Day when we visited Raglan Road we had a great time there and we still talk about it being in the top five favorite restaurants we visited at Disney. The food was absolutely delicious and we even brought home some souvenirs from the Shop for Ireland.
One of our favorite things we did while in the restaurant was learning to speak Dublin-ese. On the beverage coasters and menu were translations. IE - "De face on dah 'n' the price of corn beef!" (the face on that and the price of corned beef!). Translation - that person doesn't look particularly happy.
I highly recommend checking out the web site, it's even a ton o'fun. www.raglanroad.com
Under events you can find information for the St. Patrick's day Festival beginning Mar. 15. Also under the heading of "roots" on the web site you can find more on how to speak Dublin-ese.