Eurostar Question - Planned engineering works

Since the problem is in France, the France forum might have been a better idea. But hopefully it won't matter.

It clearly says "Tickets will go on sale once the impact is known, and our timetable has been finalised." so I would wait if it was my trip, assuming the exact timing is not too important.

There is a similar note about work on the UK section of the High Speed line which reads-

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We are running fewer trains than normal on Sunday 26 November due to engineering works on the UK high-speed line.

If you want to travel on that day

Please note that:

no trains will run from London before 10:00
and some departure or arrival times are different to our usual Sunday timetable.
Due to unrelated trackworks in the Netherlands, no trains will be running to or from Rotterdam or Amsterdam on that day. Please see our travel update about engineering works in the Netherlands for more info.
END
The note about work in the Netherlands reads-
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Saturday 25 to Sunday 26 November and Saturday 02 to Sunday 03 December 2023

Trains will not stop at Rotterdam or Amsterdam on these dates. All trains between London and the Netherlands will terminate or start their journeys at Brussels-Midi/Zuid.
END

All of which clearly implies that there will be trains running, but on a reduced and amended schedule.

This is over three months away- the railways of three countries need to co-ordinate, which will take time.

What this probably means is crowded trains, and there are unlikely to be significantly discounted fares.

Whether you think that this means that you should fly, or possibly retard or advance your travel to a weekday is a personal decision.

Thanks for the feedback

Since someone else is paying (work) discounts aren’t a deal breaker. But I have to br in London on Monday morning

May have to fly.