It would be obvious to any cafe owner.
After you have something good going on, one of the simplest ways to increase the number of regular visitors is to add tables & chairs ... and couches and other little nooks & niches, into which people can adapt, fit, hang out.
People don't come back if a place is empty all the time. People also don't come back if they can't find a place to sit, each time they visit. So ... make sure the place is always packed, and have extra seating available.