I just got an Air3S just to have that Class A1 label indicating that it's under 900 grams. But I probably could have gotten a Mavic 3 or 4 Pro instead and use it in A1 Open Category like a C0 or C1 drone and probably never get confronted to...
You couldn't fly in some situations because you were aware that your drone with the extended flight batteries were just over the weight limit or the DJI Fly app prevented you from flying?
Did you see signs of enforcement, like police or other...
I just returned from a month in Scotland with a Mini 4 Pro. Be aware that "Europe" includes the United Kingdom and the European Union, each with their own set of drone regulations. The EU member countries abide by their common European Union...
So I guess you'd have to change the max altitude in the settings before preparing to have your drone "climb" a mountain while you control it from the foot of the mountain.
You just have to have a good idea of how tall the mountain is relative to...