Yes.Mandatory exchange without submission to driving test
after 185 days after the entry into Portugal.
Yes, as long as you get an international drivers licences from the AA to acompany it. The international drivers licence is valid for one year and you require two passport photos to get it.
No
At driver.com ( http://www.drivers.com/topic/59/ ) you can obtain an International Drivers Permit. It is not a replacement for your South African license but it could aid in driving outside of your local area and at car rental offices.
No.
Yes, you can smile for your South Dakota driver's license photo.
16
No, South Dakota will honor Iowa's ruling. They will not allow you to obtain a license before you could get one in the original state.
Yes a South African driving license valid for US. As long as you have a valid driving license from South Africa, United States will honor it and you will be allowed to drive.
yes
no
Yes.
If you have orders showing that you've been stationed there for 30 days or longer, you're considered a resident, and qualify to apply for a licence in that state.