How relevant is work experience to get inside the MBF in the HSG?

Hello, me again haha, I am curious about how important is to have many work experiences before applying to a Master, for example the MBF (it says that it is worth 15% of the selection criteria), I ask this since I have seen people entering the master in LinkedIn with 2-3 internships in multinational companies, like KPMG, PWC, Deloitte, etc. And I am planning to work like for 1.5 years before applying, but maybe like in 1 or 2 companies, like Holcim, Nestlé or Roché (which as far as I know are like among the best options I have in my country), and I am afraid that my experience won't be enough for entering, I dont know if the companies I want to get in have enough good reputation to enter the Master, I don't know how exigent the HSG is in this aspect.

I would love to hear your opinions on this!