Everything is going to be fine. Once you hit the 48 hour mark your symptoms will be gone, I'm sure of it. You won't have d* on Sunday. It also sounds like you're doing an amazing job cleaning, so the chance of anyone coming down with it are pretty much 0%. It's also doubtful that it's a different virus than what your family already had. I really, truly think that everything is going to be just fine. I agree that I wouldn't be going to someone's home that had a virus, but I must say that if I were to go to anyone's house it would be someone who has emet! At least you know it's going to be clean!!!
Try to have fun despite all of this chaos. Goodness gracious! And remember, you've all had it now and YOU SURVIVED!!! You did spectacularly, friend.