Welcome, and I can say a seasonal Nadolig Llawen y Blwyddin Newydd Dda (although not entirely sure of the spelling, I sounded it out). Welsh was my Dad's first language. I'm not fluent, but I can order a cup of coffee and say thank you. Given the time of year of our visits back to the family, my Welsh vocabulary tends to be heavily weighted toward Christmas words.
Geez, I could've said Croeso as well. D'oh.
Dennis