My DH brother and his wife live in California, like us they have two DD who are a similar age to our DDs. Now they usually come over in July to visit they spend 2-3 days with us and then they go to her family for four weeks. Her family live a 6hr drive away. Anyway we arranged that we would visit them next summer so we found a good deal with the flights if we left at the end of June, leaving the uk in July was going to cost an extra £1000! So we emailed them to let them know and to confirm as we really wanted to book these cheaper flights....So SIL has emailed back, apparently she told her sister about these cheaper flights and they are now coming out at that time.....So we wouldnt be able to visit as the same time as them. She said we could always come over in Sept or Oct....My DD1 starts school in Sept so its not an option.I am really annoyed we always grateful for them visiting us but often do feel that it is really a courtesy call.