Rahello and Amenemhat would party hard.
Covindor would spend the time with his family. He would have a good meal with them, talk to his sister and do some training with his cousin.
Enkar would want to prove he's a great shaman, so he'd do the biggest, most powerful magic working he knows.
Morgan would go home and spend the time alone, doing what he always does when he's off duty. He'd not want to make a big deal out of it.