Studying elsewhere with definitely broaden your horizon, open your mind towards other cultures. Besides, you'll be able to make friends and establish a network somewhere which might be beneficial if you ever plan to work abroad. It definitely opens up a wide variety of opportunities
Like others said, it depends on the individual, what is most important to you, what kind of impact you want to make, if you're okay with the downsides of each option.
Imo, it doesn't have to be just a commercial gimmick, it all depends on the couple itself. While love should be expressed every day, why not make it extra special that one day of the year?