We must eradicate the fear of gaining weight on holiday. It's mental clutter that does more harm than good.
As long as you've established your health and fitness habits, a holiday will not derail you.
And even if it does, you have a lifetime of fixing them.
But you may not have a lifetime enjoying moments with the people you care about.
And let's say you do feel anxious about your weight, choose to walk more when you're out. It's one of the best habits you can maintain on a holiday.
But please, enjoy your holiday. You will deal with the necessary when you're back.