Essential Packing Tips for a Sale Week in Europe

Have you been on a sale week in Europe,
specifically Croatia,
but I’m sure Greece and Turkey have similar experiences.
Regardless if you’ve been on one,
I need some advice. What should I take?
What is something that while you’re on that trip,
you’re like, thank God I brought XYZ and, um,
can you let me know pretty quick?
Cause I leave kind of soon. Thanks.
Love you. Bye.