I seem to spend a relatively large amount of time where there are no Shell supplies ( > 17 miles from home), Tesco much easier tho.
One of the reasons that I chose an APR map is that it has 4 "settings" (including standard & Valet - albeit valet parking not an issue that I face in my life!) these modes are readily switchable using the cruise control stalk and a PIN code.
I can also choose to switch down from "Max Power"/99 RON back to standard, allowing me to operate safely in areas where the higher RON fuel is not available.
However, I am finding that this is becoming less of a problem as time goes on; you can usually find either Tesco or Shell on, or fairly close to motorways in most places. I have mostly been running on Tesco Super ("Momentum Plus"?) as it's quite a bit cheaper, and much more readily available. No issues at stage 2 n a bit with Lobba HPFP.
I am not getting drawn into the "who's the best map" debate - just sticking to practicalities for a daily Driver.