As is turns out, that "10 hour drive" turned out to be closer to 15.
We had a wonderful trip there, and meeting Charlie was a pleasure; he was overjoyed to get his bracelet back!
Here's some coverage from various news outlets:
And to fill in a bit more information, it turns out that they were not paratroopers as I was originally told (and also not in March of '45, but rather winter '44-45), since Charlie was a radio operator in a tank. I have also been informed that my grandmother's farm was not in Arnhem, but rather in a small village called "Hoog-Keppel" close Arnhem.
I've been told that this photo
was taken at Hoog-Keppel (Charlie "Chuck" is in the middle), so this was taken soon before or after trading the bracelet.
Thank you Temujin for your help (and detailed thread) regarding the assignment of service numbers.
Thank you to the site administration for hosting this site.
Additional thanks to Mark Zuehelke for getting in touch with some geneaologists and other historians.
Charlie and I just before we headed back home to America