@Nannieree if you can charge at home there are no issues with getting a charge while out and about, if you can’t then a bit more planning is required but is, as you say, ‘a pain’ ☹️
Last month I stayed near Norwich while visiting Lowestoft to do another of the 4 points and had no problems getting a charge, I had planned to visit the big Gridserve hub at Norwich but in the end didn’t need to… I’ll use that as another excuse to go there because Lowestoft wasn’t great ☹️
But as already stated, if you did run out of charge phone the RAC to get recovered. However I’d recommend not waiting until the car dies in the middle of a junction or on a fast A road but if you think you’re going to get stuck with only a few % left then park up somewhere safe and call them 👍