I often drive on the continent with a UK spec car. I've not had any problems driving on dipped beam.
Any inherent bias to the left might increase the chance of dazzling on-coming drivers so its particularly important to check your beam height. Check whilst fully loaded with luggage etc , and if necessary check again if driving at your destination without luggage. (then again for the return trip) I stop a few metres behind a parked car and adjust until the fairly obvious beam cut off is just below that cars window line. This height may not give the optimum dipped beam distance for you, but I find its still better than many cars without LED lights manage in their home country. April and May have long daylight hours
I also wondered if RDMS and other systems that monitor the verge, lane markings etc would behave any differently . I have not noticed any difference .
In Germany you may find the Built in Satnav starts giving traffic information, warning you about delays and hazards ahead, and possibly diverting you. Check your satnav settings if you want to avoid tolls, and whether it will avoid areas that have restrictions for environmental reasons. A UK car may qualify for exemption but you could still be fined if its not registered.
France has some areas that may require a crit'air sticker Obtainable from this site .
https://www.certificat-air.gouv.fr/ The mk4 gets a class 1 purple one. It costs less than 5 euro and lasts the life of the car.
Germany requires an environment sticker for some places ,including some quite small towns. There are various sites that sell them but prices vary Some charge about 14 Euro but I got mine (a class 4) from the Berlin city site who only charge 6 euro again for the life of the car (may be some postage) Its valid for most other towns as well. ( a few major city centres may require a stricter sticker only available to EV's etc)
https://www.berlin.de/labo/mobilitaet/kfz-zulassung/feinstaubplakette/shop.86595.en.phpAlthough you dont need the sticker if you only drive on motorways I have quite often found myself in a restricted zone and at risk of a fine when booking hotels or leaving the motorway to save up to 10 euro on the cost of petrol. Having the sticker is 6 euro well spent
You risk a large fine if you use a dashcam in Luxemburg (or Austria.)