In my country the most important traditionals are:
👰 when the guests at the wedding shout "bitterly", the bride and groom must kiss each other
🥚painting Easter eggs
💦Watering each other in Wet Monday
🎄Christmas Eve dinner with the family and gifts under Christmas tree
We have many. Depending on person, Age group and occasions/ situation it varies. Dancing is one and it's also varies according to occasion and situation.
My favourite German custom not many foreign people know is the correct way to say cheers when drinking. You HAVE to look each other in the eye while saying "Prost" and either clinking your glass against theirs or raise it in their direction. If you don't have eye contact you will be cursed with 7 years of bad s*x