How long can u keep up the Good Hostess Act???

thankfully i havent had guests living for a long period let alone treating me like servants! ive had MIL and FIL living for 2 months and in those months i hardly cooked :D that was fun ;) hehehe cus i wud work till 5.30 and she wudnt obviously wait for me to cook lunch u know... so she wud cook and my hubby and FIL would eat and sleep... when i wud b back from office, they will all b sleeping! i dun mind guests that much... the only thing that bothers me is coming without informing me atleast some hours before... u never know maybe our fridge is empty or house is a mess or i just dun want them there! when my BIL stayed for 2-3 months it was pretty much ok and the best part was he didnt occupy our space or invaded our privacy... infact hes the only weird BIL i have(but me likey!!). he dusnt watch tv or movies. just give him internet and a room and he dusnt move his ass except for water or something! plus he is easy when it comes to food preferences. one of my devars is such a gosht khoor ... i can literally KILL him!!!!!!! my biggest nitemare is havin him live with us for more than a day!! plus he eats alot Mashallah.... sara khana khatam hojata hia :D