I've observed significant changes. Can't say much about parks (haven't been in one during the last days, for obvious reasons) but at stores and supermarkets people were trying to keep their distance. My regular supermarket has painted lines on the floor in all places that typically get crowded to help with keeping the 1.5m minimum distance while waiting. Multiple hardware stores have limited the number of customers admitted to the store at once, surplus customers have to wait in line outside (at appropriate distance).

Home office has changed from being the exception to being the norm for a week now at my workplace (an IT company), and I've heard the same from members of my family working elsewhere (in non-IT businesses).

If you spend 8 hours a night sleeping next to somebody, I don't think a little public cuddling is going to hurt.

Well, this got lost in translation. "Cuddling with each other" ("miteinander kuscheln") in this context is a German idiom that means strangers standing really close to each other.

Sounds like "huddling" together might be an English word that conveys the meaning slightly better than "cuddling".