PREPARATION FOR ATEEZ CONCERT IN SEOUL

Good morning/ afternoon/evening atinys. So am going to ateez world tour in Seoul. This is my first concert so I need to know what all things should I prepare for the concert. I'm going alone , evenif my friend drops me off and pick me up but still I'll be alone at the venue. Also since it's in jamsil indoor stadium, do you guys think it'll be warm enough? Ngl we can't dress well in a fucking winter. I have been thinking about outfit for a long time but acc to the weather I should be layered up. Aami