Your passport, mostly. Make sure it's still valid!
No, you do not. The welcome part is totally optional, but open to all and everyone! We'd love to see you prior to the big day!
Yes, there will be platters and such for everyone.
If you are traveling on one of the buses from Travelodge Dublin City Centre, please get ready there prior to checking out. When you arrive at Tinakilly there will not be enough time for you to get check-in and dressed prior to the ceremony.
You'll want to contact your cell phone provider and organize international plans if you plan on having cell/data service BEFORE landing, just to be safe. Also, be sure to purchase electrical outlet adapters, as Ireland uses Type G sockets. You can get 'em from Amazon for around 10 dollars.
You can either take a taxi, a rideshare option, like Uber or FreeNow (though these essentially just connect you with a taxi driver), or a public bus, via Dublin Express.
Wouldn't I like to know! It'll likely be in the high 60s and hopefully not raining.