When I was in Amsterdam and Berlin last month, the places that checked vax documents gave it a decent look. Although, maybe bc I didn't have a vax QR code they could just scan so our CDC cards were a bit interesting to them.
I certainly timed my vacation to Europe well as restrictions were loosened after the Spring/Sumner. You needed to be vax'd to get into many places (or have proof of recovery document) and a fair bit of mask wearing but mainly only on public transport. Now, the clampdown appears to be back, along with rising cases..