This year, it was a three day event, they had to rent out the whole industrial palace (
https://en.wikipedia.org/wiki/Výstaviště_Praha) and build another wing outside! Total over 13000 square meters, over 250+ companies. General Hydroponics, Plagron, Barney's, Dinafem and Royal Seeds had huge and amazing tents... if you can even call it tents, they took the biggest venues for themselves. Also those damn 5€ wheels of fortune were a killer, all seed banks had them.
Cinema with movies and docs all day, Chillzone with live DJs and literature, kid's corner and live presentations by professionals and academics.