Hi there Xtemujin!
No worries about that. You can wear jeans. As I mentioned previously, no Kopitiam/Coffee shop attire. Jeans and t-shirt is perfectly fine. The entire project team has been given the same set of instructions.
If we had stated 'casual', we will have the whole coffee shop/market down at the event!! Therefore, we had to put down business/smart casual attire. You can still look smart in jeans or even tastefully torn jeans. It is a fun and funky event!
And I will be personally manning the entrance.