I hope its going to be warm. forecast says it will. There is going to be a BBQ after wards. I am planning on wearing very loose black cotton trousers, with a purple or red top. On my feet I was going to wear my black sling back shoes. However, if it's hot and my feet are sore anyway, they will swell. Don't have black sandals, the ones I have are a sort of plumy/copper colour. I have black flip flops with jewel effect on, maybe they would do