I work with Marriott.

You can only use an employee discount card if you are an employee. You need to show id and book with a special rate. They will then make photo copies of both your id and your discount card.

There is a friends and family form you need to have to get the rate. Your friend can go to their Human Resource department and ask for a form. you will then book with that special rate. Keep in mind, you are a reflection of that friend. This mean no causing any type of trouble since your friend can get reported and in trouble.