Arlington is free to enter and walk through. There is only a fee if you want to use the hop on, hop off tram that runs through the whole cemetery. It makes about two dozen stops at popular locations. But the fee is waived for disabled and a companion if you bring your disability placard from the car. Normal fee for the tram is $15 per adult if you have to pay but half price for military and veterans.
Call to see what they can go for you. Contact info: https://www.arlingtoncemetery.mil/contact Otherwise, fees listed here: https://www.google.com/search?client=ms-android-sprint-us&q=How+much+does+it+cost+to+go+to+Arlington+National+Cemetery%3F&sa=X&ved=2ahUKEwjp3vmj54ziAhUErVkKHU_dAxAQzmd6BAgPEAs&biw=406&bih=698
In uniform, free, otherwise $6.75 with valid military ID.
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