Do I have a reason too be ANNOYED??

Ok,Im a person who basically doesnt give a crap what anyone thinks of me.with that in mind,I get very annoyed when my wifes family is about too come too visit and she runs around like a maniac trying too clean the whole house.too the point it looks like noone even lives there,let alone have 3young kids who naturally make a mess.I asked her why does she do that?Are you ashamed of how we live or faking how we live?either way,I dont like it.I have the thought of,if they dnt pay our bills/feed our kids:clothe them etc,who gives a crap what they think of us?If they think our house is abit messy for there liking,dnt bloody come over!!!haha.so i have a nick name for her family now,the "Royal Family".Ironically,when its just us no visiters,im the one keeping the house tidy and she doesnt give a crap!!haha. Am i right to be annoyed?