What great pictures. Just to say that many towns and villages in Portugal follow the same tradition. I’ve come across several, and it is usually part of a bigger operation — a few people working on the flowers, others cooking food, transporting bags of petals, etc. In my experience, the local people are happy to have outsiders enjoy their traditions.
Lots of observations come to mind about reverence, devotion, dedication, fleeting humanity, impermanence...… how lucky to see these spectacular floral displays that take days to make and minutes to be crushed. Sort of like sand mandalas, seems to me, though I say that with no real understanding of Tibetan Buddhism.
And I agree with Chrissy that it would be great to see some more pictures!