Anonymous wrote:
No, it does not. Not if the SIL does not want to spend time with just her ILs. Vacation time is precious. Maybe SIL feels that she needs some downtime and having her parents will ensure that her kids will be looked after if she needs a nap. You just do not know the dynamics of OPs family and her tone sounds very selfish.
Vacation time is no less precious to OP's SIL than it is to the rest of us and her husband (OP's brother) has asked her to spend a week with only his family. If she has a limited amount of time and she has to give her kids grandparent time, why not combine the visit with both sets of grandparents so that she has some vacation time left for herself or just their nuclear family. Would OP feel better if rather than having SIL's parents come along, that her brother and the cousins skip the family vacation and go visit her family instead? OP and PP's like you are saying that SIL should have to suck it up and make the sacrifice of a week with only her in-laws, where OP is not willing to make that same sacrifice. And, again, for those who say she needs to plan that vacation time with her own family some other time, too bad. Many people don't have unlimited vacation time to be able to spend a week independently with each side of the family and still have vacation time left for themselves and their kids.
Last, an anecdote. When my parents celebrated their 50th anniversary, my siblings and I took the extended family on a cruise. My parents had all three of their children and 4 of their 5 grandchildren there. My sister and brother-in-law came along and about 3 months before the cruise, my brother-in-law decided to bring his father and step-mom along. It seemed odd as none of us had met them, but they came along. First, they were wonderful nice people and we really enjoyed their company. But, it turns out that one of the underlying reasons for coming was that we had a stop to make. My BIL's older brother and father had been estranged for a many years when the older brother came out as gay. The father could not accept it at the time and they stopped speaking. It turns out that the older brother and his long-time boyfriend were living on St Thomas and that was one of the stops. We went to St Thomas and spent a day there and it was the first time in over 20 years that the father had spoken to his older son. It was a wonderful day make all the better by this happy reunion since father wanted to reconcile with his older son.
My point is that you do not know any family's internal struggles and why they need to join an outside event. Some acquaintances recently had the situation that OP has and a set of in-laws were coming along for a family vacation unexpectedly. The family did not find out until later that the MIL was ill (cancer) and it ended up being the last time that she saw her grandkids. There can be many reasons for the SIL wanting her family together. While it might be disappointing for OP to have to change her mindset on what to expect from the vacation, she should be gracious and accept the changes. She was given the opportunity to object a couple of months ago, and had she objected then, her brother might have been able to either explain extraneous circumstances that might change her mind, or accept the objection and try to reschedule the visit with his inlaws. At this late date, trying to change the other family's plans would be rude.