The text states he usually just hangs out at home, playing video games or watching Netflix on Friday evenings.

The text explicitly states: 'This Saturday, however, was different. The city was having a 'Green Day' event'.

Mark thought, 'This is a great chance to take advantage of the free music and spend some time outside.'

Mark felt that Dave was trying to take advantage of his friendly nature and the relaxed atmosphere.

The sign stated 'Students get 20% off all drinks today!', and they were both students.

Throughout the story, 'hang out' is used to describe casual, relaxed social activities like playing games, chilling, or talking.

Mark saw the 'Green Day' event as a 'great chance to take advantage of the free music and spend some time outside,' indicating he intended to utilize the opportunity positively.

When friends 'hang out together, ordering pizza and just chilling,' it implies a relaxed and informal atmosphere.

Mark enjoys 'relaxed evenings' and focuses on enjoying himself at events, declining business talk.

Leo says this immediately after they notice the sign about 'Students get 20% off all drinks today!'