Just back from Boro, great time...would recommend casual, jeans and top, sparkly ok just decent snow suiting footwear!!! Recommend the Buzz Bar and white magic for a casual drink, great manager!
Jeans ..if u are in hotel..t-shirts are worn alot...put a couple of more dressy tops in just incase..they still go well wth jeans...mainly casual.and comfy..no heels..not unless you want to look silly...you will have a great time whatever you wear dont worry..
too be honest I was always too knackered to be bothered to dress up or put my face on in the evenings.
I'm just beyond burning the candle at both ends and trying to round up family to be a ski school for 9.30 (our instructor started early to get us to best spots with no queues) meant a few glasses of wine in the hotel bar in the evening was enough excitment for me.