Marc, a friend of mine who cruises on Crystal told me that now if you sail from 7 to 20 days you get credit for 1 cruise level. 50 cruise levels will entitle you to a free cruise. If you go on a WC, you'll get credit for each segment whiuch could be 6 or 7 segments. Plus there a many other benefits such as shipboard credit that you can accumulate. Hope this helps but I still want to continue cruising with Radisson.
