I am too scared to use my badge to park on double yellow lines, I think years of driving before I got my badge have indoctrinated me! I would worry all the time that I was causing an obstruction even if I thought it was fine!
I find I need to check every time I use a new car park, there are so many variations on when to pay, which spaces I can use, for how long etc.
I always check on Street Map before need to park somewhere new to see in advance what the parking is like, especially street parking in shopping/restaurant areas. Even with my badge, there are still some places I cannot go as I cannot be sure of getting close enough, I am unable to walk more than a few yards.
In fact, parking is a major anxiety for me and I get very cross with myself for over thinking things!