what not to wear

I'm off to punch the air now. It's a motivational company conference tomorrow and I'm travelling down tonight. I just love corporate shindigs don't you? Worse still, it's 'casual dress'. Does that mean smart casual (usually epitomised by chinos and a polo shirt in a sort of psuedo dot come stylee), business casual ('slacks' and a shirt but no jacket and tie), or just plain casual ( a 'who not to fuck?' t-shirt some frayed jeans and trainers). Damn it! It's so much easier to wear a suit.