As with ilene, we received a hanging toiltries bag and a booklet of coupons (several 2 for 1 drinks) on the Radiance February, 2005. The bag is embroidered with Radiance of the Seas -- this is nice since you can't purchase this at the stores.
Last year on the Explorer of the Seas (Feb 2004) we received the coupon booklet and an embroidered fanny/waist bag. I use the fanny bag all the time. It holds my CD Walkman player when I go walking. Each time I see it, it makes me smile because it reminds me of the Explorer voyage.
I don't think you'll have a problem bringing your friend. They will ask for your invitation at the door to the reception.
It only takes a phone call to the Crown & Anchor Society (800+526-9723) and specific information about the sailing they took.