People almost never need additional salt, thanks to the typical American diet. Processed foods (like those eaten in the field) have more than enough.

In fact, most people need additional electrolytes like from the various -aide drinks only under very special circumstances - like if you're playing football in the summertime. If they didn't have lots of sugar and flavor in them, people wouldn't be drinking them the way they do.

I'm not a salt-nazi, but extra salt isn't a big concern physiologically for anyone I've ever seen, unless they do something really stupid (like try to flush the drugs out of their system).