Could I put an EF Tour as an activity on the Common App?

I recently went on a language immersion tour to Costa Rica this summer with EF Tours. Could I put this as an activity? It was definitely more learning than vacationing. I am also an officer of our Spanish National Honors Society, multi-cultural club member, have taken through Spanish 4, and have no Hispanic background. Could and should I use this an activity?
Thanks!

Sure, you can put it on.

Of course.