AIBU to refuse looking after my sister's child during her honeymoon?

Well politely point out that they should have run it by you before making the gift. Bloody cheeky to assume things from others.

The in laws can mind the child or the groom should have organised childcare, but really, why dont they take the child with them.
You have your dh to think of too.
It's not his niece and you have planned a relaxing time.
If it was your dh sisters child you wouldn't be expected to babysit
.
No way would i spend my annual leave minding somebody else's child and remember your dh gets a say too

Wow sorry to be judgy mcjudgerson but leaving an 8 year old for 2 weeks is really a lot! Maybe if they're like one and don't know what's going on, or 18 and can fend for themselves. But at 8 they're there wondering what they did wrong that they got NFI'd on holiday?

I'm a bit bemused as to why this wasn't discussed earlier

My sisters in laws have contacted me to say that we can sort this between us

The absolute bloody nerve of them. Tell them there is no “us”. They booked it, they’re responsible for childcare, you’re not available. Some people 🤦‍♀️

Tell them it's a babymoon and you actually take your child with you to celebrate 🍾

And you can't babysit. You're booked in for something else that fortnight.

I’ve got an 8 year old girl, no way could i leave her for 2 weeks even with family. Who wants a holiday that long without their child?
I think it’s a huge ask of you and very cheeky.

Poor child she must feel an inconvenience to her parents. I can't imagine leaving a child for 2 weeks to go off on holiday. Sorry op your sister seems very entitled and selfish (edited as turns out husband to be actually wanted ti take their child)

Hm so I came on expecting to be on team 'you should do it'. I should say my sister is my best friend and I adore her kids and would be utterly delighted to have them for any length of time just to get to look at their lovely little faces all day...

I digress...

But yeah in this case I just think it's taking the mick. This is a gift from the in laws, and the fiancé knew about it. He should have sorted the childcare! His parents can't give 2 weeks away as a gift and not think about childcare?

Given it's a family property maybe they just do one week as a 'proper' honeymoon if that's all the in laws can have her for?

To be honest my kids are similar age and I wouldn't dream of leaving them for 2 weeks anyway. I'd miss them too much. That's a whole third of the poor child's summer holiday without her parents.

I honestly wouldn't offer a weekend in the middle etc like some posters are suggesting. Wouldn't trust the in-laws to take her back and not try to force you to keep her, since if they wanted to be doing the childcare, that would have been the original plan.

Absolutely no way would I do this, sorry siblings.

Maybe I'm sour, but a) we didn't get gifted a honeymoon, b) its been 15 years and we've still not had a honeymoon, c) we wouldn't have dreamt of dumping our kids (nor asking anyone to take them) to have gone on one.

YANBU.

Edited because of mega awful grammar

Bollocks. Selfish parents, stupid thoughtless in laws.

I would have hated to not see my 8 year old child for 2 weeks for a holiday. Tell them to take their daughters with them, shes going to feel rejected

Exactly, the time to get married if they wanted a 'proper honeymoon' was 9 years ago.

Just no!! I wouldn't entertain this suggestion and I wouldn't feel bad about it. Honeymoons are different when you already have children and they can't just palm their child off so they can have a bloody honeymoon for 2 weeks. 1 week will be fine,I'm sure and the in laws can watch their granddaughter/niece etc

It was very presumptuous of the in-laws and groom to make these plans without talking to you first.

IF you’re feeling generous, you could offer to have your niece for the weekend in the middle to give in laws a break, but apart from that it’s their problem.

No, not unreasonable to say no at all. Do not feel guilty!
Its very short notice, and you have plans.

However - I do think it would be nice to offer 2 (or even 3 days/ 2 nights) ? Especially if you genuinely love your niece. No need to, but would be lovely of you

Isn't it a bit presumptuous of in laws to assume your sister and fiance want a two week wedding without their child? I could understand if it were maybe a long weekend away, but I can't think of many parents who would want to go away without their child for that long. Fantasise about it when they're driving you mad, of course, but two weeks away from your child is a long time!

Absolutely not. The couple want a 2 week holiday without her, so they would be hypocrites to not understand why you and your husband want your 2 weeks off together without her too.
By "proper" honeymoon, i assume they mean lots of sex and no responsibilities, what if you and your husband want to spend your rare time off together doing exactly that? Not to mention you've planned practical stuff that needs doing, your kids are 15+ and can make themselves scarce or help, an 8 year old would need actively caring for, getting in the way of the stuff you need to do, and especially the stuff you want to do.

Whoever "gifted" the holiday, does the childcare, or they take their daughter with them. This is on the groom who knew and made no plans.

The child’s own parents!

Or the in laws who have organised the whole holiday.

It’s absolutely fine if people want to offer childcare so a couple can honeymoon alone. But the OP hasn’t offered.

They should take their child with them.

The couple been together for years and have a child, it's not like they'll want their honeymoon to be intimate together for the first time.

They weren't even going to bother with a honeymoon until offered one 🤷🏻‍♀️