I change SD cards every time I change batteries just as a precaution . It’s a nice and cheap insurance policy . This protects me from bad SD cards and crashes.
I got the Fly More with RC 2 in March, besides the drone, 3 batteries, charging hub and controller, I got the ND filters, 2 extra props and a carry case. The Fly More I see now doesn't include the case... I think they call it the "Fly More Combo...
I had the case from them for my Air 2S... I had to glue in a velcro strap to keep the DJI RC in place. As I said, the only reason I use it is because it's slim enough to fit into my backpack I take to work (so it's easy to always have it on me)...