If you intend to record 4K then this is the card that will be fast enough.
Important thing is to take your time to learn how to fly the Mavic in a safe manor familiarize yourself with the app and all the controls.
WEX photo video, Jessops, Amazon,co,uk Direct from DJi
My advice make sure they have it in stock, I cannot vouch for any of these company's as never use them.
Hi Welcome to the forum. please take a look a my short film of my MA in Kefalonia.
One tip when flying out to sea is to make sure the wind is blowing onshore also I took 3 batteries with me
Fly safe.
I've had my DJi Mavic Air for nearly 12 months now, and I just let the batteries look after themselves they are after-all intelligent batteries.
I just charge the up as and when required.
I'm glad you recovered your MA, the moral of the story is as a beginner always fly in an open space no trees, houses, power lines, also check wind direction and speed.