Hi Loopylou and KAe
I'm one of the Tour Managers taking this tour this year and will be going on June 13th, so if you are booked then I look forward to meeting you at St Pancras.
As for clothes, there is no need for anything special, just casual throughout. I would suggest some comfy shoes for walking though as you can do quite a bit on this tour and Bruges has lots of cobbled streets.
Its a lovely weekend tour so I am sure you'll enjoy it.
See you at St Pancras, Lynne