"So what if the situation hasn't improved by xmas? "
Then I'd make a decision what to do then. I suspect if there is a second wave, it will be over the colder winter months, and school might be shut again anyway.
"10 months out of school."
No, from April to mid July is 3.5 months, then September to Xmas is 4, total is 7.5, not 10. I dont know why people include Summer in this when there is no school?
"You can't just expect to just drop them back off whenever you feel like it"
Well, actually I can, because that's the way it is at the moment. The Welsh Government is acknowledging its worrying times and giving parents some choice. Only 50 per cent of parents have sent kids to the catch up sessions. They also recognise that there is risk and are looking to do all they can to alleviate that risk.
"I can understand if there is medical reasons but not for anxious parents. That is why it has been made compulsory. I am not exactly thrilled about my 2 kids going back but it is the best place for them and they are at such low risk. My son is going into reception and I know loads of people who wanted a place but didnt get one. "
So you are in a slightly different position to me. My kids are High school, where there is often 3 to a desk and if they do the same as England, that's a bubble of 150 odd kids and multiple teachers. They wont lose their space if I keep them off a bit longer.
"There is no way the school would just accept me saying ah well it could be a few weeks, could be a few months but I will let you know!"
Well some schools will have to accept that because several parents on this thread alone have said if that's what they decide to do, they will just accept the fine. Schools cant just kick kids out because they are off for a few weeks or a bit longer, there is a massive process of negotiations when absences become long term. Some parents may want to see what the conditions are like first, and some may decide to homeschool.