DS is 11 and in Y6. We have just been told that some surprise celebrations have been arranged for a family member (a close family member) who is 70 in a few weeks. There is to be a meal on a friday evening and a day out on the saturday, with as much of the extended family as possible gathered. Many of the family live in the same city and those who don't are fairly nearby and also childfree, so not a problem for most of them to get there! Some other relatives who live abroad are flying over - DS has only met them twice, both times at funerals. They will be staying arriving thursday and leaving sunday morning. The city this will all take place in is 4 hours away from us, plus another hour getting across the city to the area they live in.
I want to take DS down to London for the weekend, leaving friday morning. The family that are flying over are rarely in the country and I want DS to get to meet them under better circumstances than at a funeral! So am planning to ask the head if she will authorise the day off - but, is this likely? Or would I be better off saying nothing and calling him in sick that day? The weekend in question is right before SATs week so worrying that this will affect head's decision...