I have one roll of Kodachrome 200 unexposed. It's dated 05/2004, and it has never been stored in a fridge. Do you think I could use it or it's better to keep it to remember the old good days of Kodachrome?;)
It has been stored in a drawer for most of the time, at room temperature...
The colors certainly will not be accurate and will have a strong magenta tint but if I were you I would give it a try. You'll be mad at yourself later.
Shoot it under fluorescent light to get rid of the green cast.