I went to Nordicfest 4 times and these are some tips
1. dont wear traditional dresses that are bought off Amazon/Ebay/Temu etc. since you could get fined or even arrested for copyright
2. get an airbnb. there is so much chaos in the tent area and once I witnessed a fight at like 4am in the morning
3. wake up early, prefferly at 5am or 6am due to Morning events
these are my tips