@KevinB Thanks for the advice. For now I am going to keep my ticket and wait and see. The prices were so good when I booked on a sale last fall that I was able to upgrade to business class, which I assume has more flexibility for rebooking without penalties. My plans for the Europe trip (not just Belgium) is outdoor architectural photography, which does not require any indoor visits. In theory I would be fine as long as hotels are available (and preferably restaurants, though if I had to get take out and eat in my room that would be ok). I suppose by summer we will know better and I could always switch countries (right now I fly into Belgium but out of Venice, Italy). Of course I don't want to take unnecessary risks but I also want to support the struggling tourist industry which needs any financial boosts it can get.