Got our booster shot yesterday, had to go to Germany for that, as it would take some time before it would be our turn, as the Dutch government is quite slow.
In Aachen they allow the Dutch to get a vaccination, so we went there. But to get that vaccination also listed in the access app we need to get a QR code from a pharmacy. We forgot to do that yesterday, so hopping across the border again today to get that certificate.
At the moment I have a bit of a sore arm. Using the arm and moving it reduces the soreness. Lot's of stuff I can learn to do using my left arm