For participants staying in Bucharest days before the 5th:
Weather forecast Friday and Saturday rain.
Things to do (recommanded) :
Bucharest Air Show on Sunday morning starting at 10 (moved from Saturday to Sunday due to weather conditions) https://www.otopeniairshow.ro/
Water Symphony in weekend evenings in Unirii Square (around 21 hrs): longest fountain circuit in the world https://www.youtube.com/watch?v=c2C_FkelOSo
Tiriac Auto Collection located very close to Otopeni Airport: amazing vintage car colection https://www.tiriaccollection.ro/