I would say look at your route, there are so many sites
that some are bound to be on or close to it.
You need more time but still the opportunity of a
lifetime.
The ossuarie at Thiepval and the tatoo every evening.
Waterloo is close to several sites too.
Mainly have fun, don’t make it too stressful and take
a break from site seeing in the middle and just relax
at a cafe or something.
Wish I was going with you, one of my bucket list things.
Take extra SD cards and take lots of pix and video, you
can always capture stills from it later.
Envious Tet.
Also you and your daughter might enjoy a movie
called “A very long engagement” in french with subtitles
about WW1 and some of the happenings at that time.
the cinematography is awesome!