The Australian English thing to do is to drop the apostrophe, use an optional creative contraction to make the phrase even shorter, and thereby turn the entire thing into a noun :)

I.e. Maccas vs McDonald's

Of course, the official website https://mcdonalds.com.au/about-maccas/maccas-story uses an apostrophe which is now making me have the same reaction as the Germans :( and makes me think it was run through some international filter :p outrageous!