Hi Karin,
Sorry for the delay I just wanted to double check the dinner details. I can confirm that since this is a special New Year’s Eve dinner it’s normal to dress nicely (dress/suit), but it’s not a formal dress code. You will need to bring warm clothes to go out and view the fireworks and northern lights.
We would recommend taking warm, solid shoes, hat, gloves, scarf and a warm winter jacket & trousers.
I hope you have a wonderful time
Julia