So for example you booked a cruise on XXX.com... which you are not booking directly on the official cruiseline webpage, ie. holland america. On the site you booked the cruise it shows a promotion that you book this cruise you will get $100 credits... You know sometimes they will say you will get onboard credits for "select sailing", but sometimes it's a bit hard to find out if the cruise you book really qualifies even the free credits perk show on the cruise you book. So you can only verify with the site you book the cruise with, but not with the cruise line? Or as said can only find out after you get onboard? Thanks!