Viking Credit Card advertising misrepresentations:
After booking an Explorer Suite for the Grand European Tour, I received an ad for a Viking Credit Card that promised a $100 shipboard credit if I spent $1,000 within the first 90 days. I am furious to find out now (about a month before we sail) that even though I opened a Viking credit card and spent the $1,000 within 90 days of opening that I am not receiving the promised shipboard credit of $100 on the Grand European Tour. Viking Customer Service was less than helpful and informed me it was their policy only to apply the credit for a future booking. I never would have gotten the card or used it if I knew this. Everyone I talked to (or chatted online with) told me to call someone else. They actually told me to contact their supervisor and wouldn't talk to their supervisor directly.
On the other hand, Viking Air was exceptionally helpful with changing our return flights when I was concerned about a short lay-over (50 minutes) in Amsterdam. That representative made my day and redeemed my opinion of Viking.
Don't get or use the Viking Credit Card expecting a shipboard credit unless you book another cruise (highly unlikely for me at this point).