Mosaic floor and whites painted stairs. Oh my goodness I just love this. Unfortunately the stairs would be too noisy in my house and the cellar is under the sitting hall and needs to breathe so we shouldn't tile it. But I just LOVE this!
If you are having an outdoor reception, consider hanging lights like this, or twinkly Christmas lights strung all around. This is a simple way to create a stunning background for your photos and provide beautiful ambient lighting.