My younger sister is coming to stay for 5 days with her dh and dc, we have paid their flights but she now insists on checking 2 bags, she is now telling us dh will only drink de-caff tea and coffee, they only eat beef steak apparently! and asking us to send pics of the cellar where the kids will be sleeping, we have explained the 'cellar' is a huge lower ground floor with bedroom, tv, shower room and if that isn't bad enough she will wipe everything down with sterile wipes, yep seriously. How can I survive the visit without causing a bad atmosphere in my home.