[Pamar]

Well, I agree on seeing some signs of Corona fatigue myself: I spent a long weekend in Prague and basically nobody were taking precautions (in a couple of museums I asked if I had to keep my mask on and the answer was "well, if you want, no problem for us, but it is not mandatory").

Guess what? Two weeks later Prague area has been declared a Red Zone (at least for Germany) so if you want to travel there you must quarantine when you are back.

[Mediterraneo10]

Again, quarantine restrictions are trivial to evade for people traveling overland. I would be surprised if even 10% of such leisure travelers were properly observing quarantine when they returned home or when they moved on from a "red zone" area to another place on their travel itinerary.