We got a RSVP from FI cousin and his family yesterday.
He filled it out all proper but included a note in the envelope asking if his daughter (who is 8) could bring her 'boyfriend'
I called him and his wife no answer so I left a message. I was nice but said that unfortunately we didn't have room for their daughter to have a friend at the wedding but that there will be lots of children there for the daughter to play with (which I thought was the thinking behind it)
Today I received an email from the cousin
Very wordy but in essence saying that as we were inviting partners we should extend this to their daughter. And that their daughter did not like being around children she doesn't know and they are concerned that some members of my family may have "rough" children that may scare there daughter. So her bringing her 'boyfriend' would make her more comfortable. And that we as hosts should make all our guests welcome.
Well yeah. I have no clue how to respond and it has made me realise why FI always calls this cousin 'his mad cousin'