We get married in a couple of weeks. We live in a 3 bed with 2 children. DP's parent's live away so are going to stay with us before and after the wedding. DP's brother and his girlfriend also live away and we said they could stay on the sofa (we don't have any spare rooms) the night before the wedding as I'd be at my parents and the night of the wedding as we would be at the hotel. They then asked if they could stay a couple of days before the wedding and the night after. I said no as it'll mean we are breaking the 'rule of 6' should it be in place still and also I don't want my house full in the lead up to the wedding as I'll be stressed as it is and just want to relax. AIBU?