Sounds very exciting sneeker :>)
How to celebrate you ask?
Just to be with the people you love is enough of a way to celebrate anything imho. To talk, laugh, cry, scream, shout, have fun? doing silly things like playing board games, badminton, darts, boules, table tennis, football, baseball, trampolining, "talking" and many many more things...
p.s. Wales did good in the 6 nations didn't they! woohoo - I lost my voice.