I had six people, all twenty-somethings from my home fellowship group over for Sunday lunch. They all removed their shoes at the door.
I had prompted two couples who were coming beforehand about removing their shoes, but I suspect they would have removed them anyway. My guests always remove their shoes at the house where the home fellowship meet. Twenty-somethings are smart.
I do think a social gathering where everybody is in socks (Apart from me, I was bare foot) is somehow cosier than ones where people are in shoes. It is very hard to explain in words exactly why shoeless gatherings seem more comfortable.