Originally Posted by
mvoight
I will note the following from the NCL faq
"Q: How many Gift Cards can be used for each purchase?
A: Up to 3 Gift Cards can be used for each Norwegian purchase."
http://www.ncl.com/giftcard/faq
For cruise reservation purchases, the HSN site says
"Limit of one (1) Norwegian Gift Card can be applied towards the purchase of a new reservation"
Of course, the deal is over.

On cruise critic, they are reporting being able to use multiple gift cards to pay down an existing reservation. They also can be used to prepay gratuities or purchase OBC online.
Originally Posted by
mvoight
You are getting 20 percent MORE, not a 20 percent discount.
A discount is a subtraction from the retail price
So, you are getting $100 off $600, not $100 off $500, or 16 2/3 percent discount.
Right. Good point. Actually, though, it would be a 20 percent discount, because the chain would have gone further if it all worked. $500 >> $100 >> $25, so $625 worth of cruising for $500. But, it didn't work. They waited to ship out the HSN gift cards until after HSN stopped selling the NCL gift cards. I think I'll hold on to mine for a while, just in case they bring them back. The stuff on HSN isn't that great, so no harm in waiting a bit.