Why don't Catholics do stuff like this?

Today, two gentlemen knocked on my door. They explained that they were from the nearby Twelfth Baptist Church and wanted to "give folks a chance to get to know the congregation." To this end, they are planning an cook-out next Saturday afternoon for the whole neighborhood. FREE! (A favorite word in my book.)

Two questions: why is it the "Twelfth" Baptist Church?

But more important to me is...why don't Catholics do stuff like this?

Or maybe they do. My parish doesn't. We have events, but they're always for the parish members.

(Is this a question similar to "why don't Catholics sing?")