Sidenote: We are supposed to be travelling to Rome- Budapest-Vienna- Prague in April-May. Now, it’s looking like we will probably cxl due to the “refugee” problem there now.
We did Budapest-Vienna-Prague a few months ago. At least then, I didn’t notice anything out of the unusual, that hadn’t already been the case for years.
I suspect in the next few years there will be drastic changes, so if you are going to go, better do it now.