AIBU...to let ExH take 4yr old DC abroad this summer without me?

[SpeckofDustUponMySoul]

ExH and I have not been together since our DC were babies, but he's maintained at least monthly visits (he lives the other side England to us) and video calls a few times a week.
Our DC (twins, aged 4.5) adore him and have been staying with him for a few days at a time a few times this year. It has been going okay.
My ExH is European and wants to take DC to his country for around 10 days this Summer to see their (his) family (for context, due to CoVid and multiple familial bereavements, our DC have not seen their paternal family since they were 14 months).
I know our DC will be well looked after, as my ExH's female relatives are are absolutely lovely and brilliant with children.
My AIBU is that certain comments from friends/acquaintances have made me question whether a) our DC are too young for a 10ish day round trip without me and b) am I being selfish for being okay with them going, despite reservations and the fact I'll miss them like crazy, as I am desperate for a break (chronic fatigue pain conditions make life a bit too tough to contend with sometimes?).
For context, all my Bio family are dead, so the European contingent are all the Bio family our DC will ever have.

I would send them under the circumstances that you describe. My youngest went away on holiday with his dad when he was 5 (14 days) and had a great time.

I think it is perfect all round for them to go. Ignore your friends. Also being a mum to young twins must be absolutely exhausting, coupled with Cfs, you actually need this break. Lively for the twins to get to know his side of the family and experience his country.

Let them go. It will become more tricky to do a long trip as they get older and school holidays become an issue.

I think you are being fantastically sensible and selfless to encourage this, don't second guess yourself as it sounds like you are being a great mum.

Gosh no, this sounds like a brilliant plan. The girls will have some real bonding time with their dad and his family and will make some lovely memories.
Do they speak your husband's language? Or do his family speak English? Either way it sounds great. I hope they have a lovely time!
You sound like a really mature separated couple - unlike the majority to just end up point scoring. Good for you!

@Mariposista ExH's younger sibling, whom they will stay with, speaks pretty okay English, as do most of the nephews/nieces and cousins. Ex-MIL speaks no English, and is quite advanced in years and unwell; she adores all her many grandchildren, so she's great.
I think they'll probably have a great time.
Thanks, everyone, for your your replies; I really appreciate it.

Let them go and enjoy the break. My eldest went to Spain for a week when she was 4 with her Dad and had a lovely time and youngest has been going away with him from a younger age.

How lovely - what a great cultural experience for your kids too.
I once saw a bunch of young kids playing a holiday resort together - there was no common language but it didn't matter - they got a ball and set up a game together. haha the girls will probably come back with a few words of the local lingo - they're like sponges at that age, and they will find it hilarious trying to mime for granny.

They will have a great time and you get a few days to relax and recharge , sounds like a brilliant idea

My DC have just come back from a week with ex inlaws. They love it and have been doing it without me (with or without ex) since they were tiny. The more you let them go when young, the happier they'll be to go in future years. It's a game changer for school holiday cover.

Nope ignore them (but cherish them for their concern)
Let them go with their dad. They'll have a ball.

If they want to go then it should be ok but I can't help notice you mentioned the female relatives. The childrens father should be able to care for his children without help.

I’ve got four year old twins too. In the circs you describe absolutely they should go! I hope you have a wonderful break. I’m sure you deserve it.

This. Is there any danger he wants to resettle in his home country with the children?

Given your posts I absolutely think they should go.

I think it's brilliant you are aware of the benefit to your twins to form positive family attachments to wider family.

They will have a great time (and probably be spoilt rotten) and as much as you'll miss them, get the opportunity to have some parental respite and do things you would not normally be able to do.

This is exactly the sort of decision your children will thank you for in the future in enabling access to their family in Europe and time with their father.

Obviously there are circumstances where I would think differently, but from what you have described I'd have no hesitation in letting them go and visit with their father.

@dworky, yep, ExH should be able to care for his DC without help, but he struggles. So, I'm very happy that he is going to be staying with family.

It's entirely normal within his family and culture for extended family to play an active part in caring for children.

Within the family, there is only a marked absence of male relatives to hand, as ExFIL died 6 years ago, and 2 ExBILs have died during the past 2 years. Otherwise, they would chip in, as well.

@Mellowyellow222 I have zero concerns about him wanting to resettle in his home country with our daughters.

Brilliant. Then enjoy the well earned break! The kids will love it - and so will you!!!

They will have the best time and you take full advantage of the break.