Yes all DVC members qualify for the discount. Just show your DVC card.
Not sure if you are aware of this or not, but only selected services receive the discount. It is a nice selection, but you may want to ask before making your ressie.
I highly recommend the Mystical Forest Therapies for $100 (after DVC discount). It's 50 minutes split between a Swedish massage and reflexology. It was GREAT! I thought the refelxology was more relaxing than the massage. Ask for Allison, she was great!
OOHHH! That sounds wonderful! I can't wait to try it. I've always gone to the spa at the GF, but since my new 'home' has a spa right there, I will definately start going there! Thrilled my home resort has a spa.