First I am so sorry you were in that accident.
The movie is VERY loud. Lots of explosions of course. I think it is almost as good as the first.
I honestly do not know if this would help but I know some theaters offer "sensory friendly films". I believe they are intended to cater to people on the Autism spectrum but they do say they "turn down the sound". I have never gone to one... although I should in order to see what the experience is like. I honestly have no idea if it would be an enjoyable way for you to watch a movie but I figured I'd let you know in case you wanted to research it.
Thanks so much! I will look into that. I was considering taking ear plugs, but I honestly can't imagine seeing an action movie without the sound in theaters. I still may go based on your recommendation!