Nico di Angelo came into Olympus to a hero's welcome, his father right behind him, despite the fact that Hades was only supposed to visit Olympus in winter solstice. The God of the dead looked stunned when his relatives clapped him on the back. I doubt he'd ever got such an enthusiastic welcome before.

Percy Jackson and the Last Olympian (ed. Penguin UK, 2009) - ISBN: 9780141962306