I did the shoot in auto with minus .7 ev. The customer is very satisfied and I got a happy medium between the ground scenery and fireworks. Thanks guys for the suggestions.
I shot this in auto and was pleased with the end result. Late sunset in the first half then returned later that night for the fireworks in the second half.
I have no experience with a Mini 4 Pro so someone will be along shortly to advise.
I have flown in ATTI mode successfully and safely many times over the past 15 years with only one problem. It's if the drone switches between modes when flying...
On a Mini4P Atti is only a mode that it goes into when GPS signal doesn't meet minimum requirements - AFAIK it is not manually selectable using the regular controller / software.
However that should not cause you great problems flying indoors IF...