Lots of it is just planning, which just becomes second nature. Now, admittedly, our only regular long journeys are Gatwick and Heathrow. We set off with a full battery, stop at Toddington for a coffee and comfort break (which we'd do anyway) and top up. Park for the holiday and then do the reverse on return.
We did Northumberland last year, same mo, comfort break and lunch with charging. No issues at all.
With the newer, faster charging stations, we're finding we're having to stop the charge last at through coffee. The new ones are making it a significantly easier operation.