It's not surprising though, @Mimosa1, because holidays are always associated with the concept of indulgence and treat. It's a break from the 'humdrum' of normal life, and the stresses that can bring. That this extends into what we eat and drink is a massive part of that.
We deny ourselves certain foods when we're low carbing because we know they have a harmful impact on our blood sugars and our weight (as well as affecting our health in other ways). While they can remain a 'treat' it's hard to accept (I think) that they are foods that we might never eat again.
That choice is - and has to be - a personal one. For me, I eat a lower carb diet most of the time. Pasta, rice, bread, pastry, potatoes and sugar make very rare appearances in my eating, simply because of the broader health issues of a high carb diet.
Every now and then, I'll eat them - occasionally it's unavoidable (being invited for dinner, for example, or in some kind of a work environment where there's no control over food). More often it's a choice that I've made - as this weekend.
The difficult thing, though, is keeping this under control - sugar (aka carbohydrate) is said to be a hugely addictive substance. It triggers a release of dopamine in the brain, which is linked with reward/pleasure, and we're driven to repeat the behaviour to get the same sense of reward - hence the link with addiction.
This is from www.psychologytoday.com:
Dopamine is one of the brain’s neurotransmitters—a chemical that ferries information between neurons. Dopamine helps regulate movement, attention, learning, and emotional responses. It also enables us not only to see rewards, but to take action to move toward them. Since dopamine contributes to feelings of pleasures and satisfaction as part of the reward system, the neurotransmitter also plays a part in addiction.
Unfortunately, as far as I know, broccoli doesn't have the same effect!
So when you're going on holiday, I think you have to think carefully about what you're going to do. There's absolutely nothing wrong with eating higher carb foods every now and then - especially if you're doing this in the full knowledge of what you're doing. There's no point in making yourself anxious when you're on holiday and supposed to be relaxing!
The difficult, of course, is not just falling into the trap of troughing all the pasta, pizza, ice-cream and chocolates all day, every day!