Yes! I went on holiday recently and it was all a bit stressful. Passports, flights, worrying about the kids drowning/falling off the balcony. The first night and day was awful, the eldest was grumpy because he was tired and everything was different, I was grumpy because we weren't having a good time.
It did all settle down, the fear of drowning lessened, the falling off the balcony was a constant fear, I had drilled into them both that they were not allowed out unsupervised and at 7 and 9 they are perfectly capable of listening but I still had it in my head that they would creep out at night and thus fall off especially when I realised there was no way of locking the doors without them being able to unlock it.
As it happened they were angels, nobody went out unsupervised, they asked every time they wanted to go out and we all had a great time. Found myself searching for another holiday after we got back despite me swearing never again.
Next year we will just do Butlins so I'll be fine, it was a combination of me not flying for years, different country and the first time taking the kids abroad as well as needing passports which just added to the general anxiety of everything needing to run smoothly.
During the week away my watch went off 3 times to tell me my heart rate was abnormally high. Been back 3 weeks or so now and it's not gone off once. So much for holidays being relaxing 🙄