Way too early to book anything that far out.

If you want an idea of the available schedules just look at the current week, timetables don’t usually change a huge amount.

Untill not that long ago the booking frame was 2 MO-since then-varies per country-has relaxed a little. Trains are not planes and many railways also simply do not want to the trouble of angry pax who have to be advised multiple times that times have changed-with 2 or 3 mins. Plus that traditionally rail-tix were all ANON! This is also-just read a tiny bit further-in the general info on main site.

THis hence also implies that all these silly fears from those way over the ocean about full trains are nonsense-except the odd 2 or 3 that they all seem to want to use.

This direct train has a hefty surcharge-you can lower that-and also will have much more choice of timings-in using domestic FR TGV till Strasbourg only and then use RES-free/optional further german trains.

I really appreciate your response, we will wait. Hope you have a happy holiday season!