I was on a five day sit over the New Year, I didn’t receive an email reminding me to leave the house as I found it. It may have gone into my junk mail - where it belongs as I do these things automatically! 
I’m okay, with mostly anything if people are honest about it; if I was to arrive at a sit, and there was a note scribbled saying ‘apologies for the mess, time run away with me’ or something along those lines, I could be much more forgiving about it. Just to leave it dirty is completely rude. I feel most people are well aware of their actions.