have a list of rules and requirements whilst they’re in our home, there’s going to be no doubt in their minds they’ve over stepped the mark
Chercando, with courtesy - you have rolled over entirely, your are now people-pleasing your people-pleasing husband, & everything is EXACTLY as it was before you posted your thread.
Except you are leaving a list.
You know how much the CF's are going to care about your list, don't you? Yup, that's it, as much as they care about you.
Passive-aggressive notes don't change situations. Your CF's won't care one jot whether your note indicates your dissatisfaction, & if they are even aware of 'over-stepping a mark', they won't give a shit.
Anyway - your life, your call obviously - just don't be surprised if similar irritations keep happening because your DH won't challenge anyone's daft assumptions, & you won't challenge DH.
I hope the CF's at least leave your place clean & tidy, & that you & your family have the lovely holiday that you have been looking forward to for so long, with no worries or resentments left over from this incident.