My OH invited two of his 'best friends' from work he had not seen for ten years or so ...to stay for a week ....I did not know them (husband had retired by the time I met him, and we lived in Menorca) ....they were ok, but took over ! She moved my food from the fridge so she could put all hers in ...stood over me whilst I cooked lunch, dinner, etc as her husband, she said 'can't eat that ....oh no, he can't have that...'...he has to have his pills (she told him he had irritable bowel syndrome .....he just went along with it !) he was ok but I really could have done without them coming back again (which they did ...they were driving through Brittany on their way down to their yacht in Spain ...so naturally, they stayed on their way back as well......) the next year, I sent them brochures of gites nearby .....wonder why we never heard from them again ???? ! ...the next time, my OH invited a very old friend from HMS Ganges in 1948, to stay (not having seen him for 50 or so years !) I had never met him, but he was lovely, and they had a really marvellous time going over old times ...he bought a car full of Royal Naval magazines and memorabilia and we had a really good time. Most of the time, I left them to reminisce, and drove them around to local bars and restaurants which was fun ! Sadly, he died two years ago, so my OH will never see him again, and I am so glad they met up (I found him on the internet ..OH does not use the computer, but it was marvellous !)..... Hey, why don't you suggest you all meet up beforehand in a local bar, or a hotel for a meal instead of you having to cook it ! At least before they come back to stay the night, you will have had a chance to weigh them up and get to know them a bit ! Who knows, you may have fun !