I used to work with a health centre giving advice for student travellers
The "big" companies have an advantage in that they are "overseen" and have an audited standard
For instance Pepsi or Coke(defizzed) was a better option than something like Dioralyte that required local water in the case of diarrhoea
Equally McDonalds et al have a required standard
Not to suggest that local fayre is not part of the travelling experience, but sometimes Canberra beneficial
The "big" companies have an advantage in that they are "overseen" and have an audited standard
For instance Pepsi or Coke(defizzed) was a better option than something like Dioralyte that required local water in the case of diarrhoea
Equally McDonalds et al have a required standard
Not to suggest that local fayre is not part of the travelling experience, but sometimes Canberra beneficial