Hello everyone, does Enterprise Car Rental charge extra for additional drivers? What about if they are a couple ?

Just open it directly when the time comes. In my personal opinion,

An additional fee is required.

In Spain for 11 days paid 64 euros, for fear of problems with the accident insurance, it is better to be more careful.

In Spain for 11 days, I paid 64 euros. For fear that the accident insurance would have problems, I might as well be more careful.

In Spain for 11 days, I paid 64 euros. For fear that the accident insurance would have problems, I might as well be more careful.

In the United States, it's free to add a spouse as an additional driver, and $12 per day for others. It's better to add them, just in case something happens and there are issues with insurance. Overseas compensation is astronomical.

In Spain, I paid 64 euros for 11 days, and I'm worried about the accident insurance. It's better to be more cautious.