Yep, we make and eat danish cookies from the start of December. We don't call it danish cookies though. A straight translation would be small-cookies. "Småkager"
Yes.
they wear jacket
You open present at night, the 24th of December. After the big Christmas-dinner, where you eat duck, glazed potatoes and for dessert you eat the danish dessert (yes, it has a french name, but it is danish) ris à la mande which is a traditional rice pudding with almonds.
Yes?
Christmas is not a religious thing for danish people. A lot of non-christian people celebrate Christmas. It's a typical tradition for danes.
'Eat' in Danish is spise.
Merry Christmas in the Danish language is Glaedelig Jul or God Jul. Christmas in Denmark begins with decorating the Christmas tree a week ahead of time. Then people are always on the lookout for Nisse, a very mischievous elf who loves to play pranks.
Some People have Christmas dinner on Christmas day and some people eat it on Boxing day
On Christmas day we eat mostly things that people in the UK and USA eat.
A Danish Christmas tradition is the popular Julefrokost which translates to Christmas office party. Employees meet at Christmastime to eat, drink and party! The Julefrokost is a sort of food marathon and lasts for over six hours. It sounds like fun.
Actually, Chinese people do not celebrate Christmas so they don't eat anything particular on Christmas.