Has anyone done Mapa training?

Hi,

I am due to do my 6 day Mapa training but the information has been a bit vague. I have been told by a couple of people that they wear jogging bottoms a T-shirt and trainers. The email I had about it, just said comfortable clothing. I have phoned the place where it is going to be held and they told me it is smart/casual! I am a bit confused and as it is tomorrow I really don't want to turn up in the completely wrong things.
Any help would be much appreciated. Thanks.