Hi dianaa! I have a friend who works at LV. I can tell from conversations that I've had with him, as well as my own observations that speaking more than just English helps. Whether or not the locations you're interested in get a high volume of Arabic speaking people, I doubt there are many Arabic speaking SAs so they would appreciate you. And of course, any understanding of French is an asset to LV.
A history of working with luxury brands is not necessary. However, I think you'd have better luck at an in-store boutique like in Neimans or Saks as opposed to a freestanding global flagship. From my experience, that's where they place the younger, non-luxury experienced yet nicest, most personable SAs.
My friend told me that once a coworker was scheduled for lunch and turned down helping a customer (because of his scheduled break) and he was promptly fired. So I think a lot of it has to do with your personality and work ethic. Timing obviously plays a role too. Their need for SAs probably increases around Christmas. Combined with a little bit of luck and you should be ok.
Also, you mentioned having managerial experience. Why not apply for a managers position? It couldn't hurt to try!
I believe there is a tPFer in Europe who got an intern position at a LV store for the summer. Maybe you can find that thread and PM her for tips.
Best of luck and keep us posted!
By the way, how'd you get to speak Arabic? I'm half Egyptian
