Hi John and welcome.
Have a read of this.
https://www.motorbiscuit.com/giving-your-old-car-led-headlights-usually-isnt-worth-it/
Our resident Electrical Wizard (HERBIE)will spot this thread and give you chapter and verse.
My 450h has sat largely undriven on my drive since February. I fire it up once each and let it run for 45 mins during which time it will top and start and stop and start and......all while I am nearby tending the garden or talking with passers by, or reading the Forum. I have on very very few occasions taken it out and about for a short run- no more than 20 miles. It is fine. I have read the Handbook and I understand what it can and cannot do. I have total respect for it.
Not checked the signage, I assume it will say "...at owners risk...."
Phil, You could be right, but one never knows!
And do read the signage re the cctv as the statements on both signs could be contradictory.