We look after our GC once a week plus covering most winter weekends for sport etc., and have done for 5yrs. My sons IL's have now opted out so we are their go to. TBH they struggle with parenting, and we have continued over the last 6mths despite them both being off work at varying times, my son with physical health issues and my DIL with mental health issues (not the first time). They are both back at work now - DIL due to go full-time after our hols next week, although she is struggling with that for a number of reasons, including the fact that her work have changed from saying they wanted everyone WFH to saying you now have to do 40% in work which essentially a day and a quarter for her, and they don't seem to be moving on the quarter, an hours journey into work, which is stressing her mental health. GC are 3 & 6. We also carried on looking after GC1 during Covid and also when our DIL was on mat leave with GC2. We have done several days when they have needed to go away, DIL parents have never covered this, I did it first when GC1 was 8mths old. Anyway, at the end of August this year we are doing 6 days while they are away, DIL's parents don't want to help. Normally to cover hols we all go away together, and we pay for the hols too. The week after they are away we would like to go away and miss our regular day for childcare and have asked if this ok, not expecting a negative. But our DIL has said it may be difficult with her work and can't ask yet because the person that authorises this is off sick at the moment. I need to know to book it but feel really guilty that it will make them stress about it if I say I need to know now. There is only one holiday home available in the place we want to go so I feel we need to book soon. Am I being difficult to say we are going to book and they will have to sort out their childcare for one week only. I feel so guilty that it will stress my DIL and my son will worry, but I really need the break. I also worry about how they will cope should anything happen to us and they have no back up childcare, DIL parents have made it clear that they no longer do childcare, they just visit for fun. AIBU to want to miss a week a few times in a year and expect a positive response to my request?