As per usual Wapping has a good take on the subject and some useful advice!
Personally I've not used a paper map since the naughties, I used Garmin Satnav for European business and pleasure travel and printed off any finer detailed maps for destination areas.
Kurviger I use + Waze, Via Michelin, Here, Google Maps, Guru and Locus Maps.
With more than enough Phone and Tablet tech I've never seen the point in Garmin/BMW satnav or paper.
Phone and Tablet both have 1Tb plus storage, multiple maps are not an issue.
I've found in recent months that Carpe Iter BT controller on bikes is a game changer with Drive Mode Dashboard app.
With 7 days, or 10 days or whatever for a short getaway launch out of that Calais Ferry terminal or the Tunnel terminal, always avoid Paris (unless visiting) and press on along the autoroutes and make good swift progress for your goal. Think about the scenic routes for the return after you've done the main destination when your days are limited.
If you're new to touring across the channel after relatively easy running on autoroutes you should have gained experience of Johnny Foreigner roads, signs and driving practices before winding through vineyards on quaint roads.
No whining about Toll prices, if you can afford a bike and EU travel just pay up n smile
Refer to Wapping for alternative advice
