having moved to the country-side I invited a group of my oldest and dearest friends to come and stay for a weekend. we managed to find a date we could all make so put it in our diaries. so I thought. 2 weeks before the date I send an email. one family can't now come - they've got family coming to visit. I feel really quite upset, and a bit mystified to be honest. we don't get together much - usual story of kids, work, distance etc etc and I was really looking forward to this weekend. I haven't replied to the email that confirms they're not coming - (it was a two-stage let down) I don't really know what to say tbh.