I know it! But when the're new ads this season, they're called Cruise ads. Many threads are named like this in this forum when you type in search.
But it's not that important in this case.
Cruise and resort is indeed interchangable but I usually go with whatever the label chooses for themselves. Gucci calls it cruise thus it's titled cruise!
Can't wait to see these in print, it looks promising after the crowded mess in the fall ads. Where is this one from Chanelcouture09, new Elle UK mayhaps?