Fine.

We have two options here:

1) Simply reverse the street, and set a reminder for ourselves to remember to undo it the week before Christmas.

2) Add "oneway:conditional=-1 @ 2023 Sep-17-2023 Dec-23".  This has the advantage of keeping the map with the normal situation—OSM data is also used for research or mobility studies, which should not be polluted by temporary changes—even though some navigations systems may not be aware of this tag.

Any preference, anyone?