I think this could be a meaningful discussion. One thing I want to know is do I have to get out of my car if I am not under arrest?
Yes. It is called obeying the lawful command(s) of a law enforcement officer.
However, cop will probably not ask you to get out of the car if you:
pull completely off the road so he isn't standing in the road beside your car where he is likely to get hit by a passing car;
roll all windows down and shut car off;
keep both hands on the top of the wheel with fingers extended so he/she can see you aren't holding anything;
be extremely polite/cordial;
when they ask for license/registration/insurance info, tell the cop "yes sir, it is in my wallet in my right rear pocket, i am going to retrieve it with my right hand" or whatever tells the cop where you are getting the item from and how you are going to do it;
Of course, "exercising your rights" doesn't require you to do any of this (except pull over and provide requested information) but do you want to "exercise your rights" or do you want to resolve the situation without gettting a ticket/arrested/tased/found dead in jail?