As others have mentioned both Honey Baked Ham and Boston Market serve what's come to be Thanksgiving/Christmas meal staples. Every restaurant is packed for Val

As others have mentioned both Honey Baked Ham and Boston Market serve what's come to be Thanksgiving/Christmas meal staples. Every restaurant is packed for Valentines. It's a big date night. Going out on a date means going out to eat. There's nothing specific to Outback about going there on Valentines, that's just where some portion of people go. Same with Applebees. And while Americans celebrating Cinco de Mayo is odd, it's not a uniquely Taco Bell thing. Any vaguely Mexican adjacent business will advertise around it. This mashup of KFC and Christmas is a very brand specific thing unique to that country.