Harry sent Hedwig with an invite to Oliver right away so that he wouldn't forget. He hadn't had many chances to stop by Azoth since he'd moved into high gear on Sirius' memorial, but the few times he had been by, Serenus had drafted Harry into hauling dirt and planting. It should be a beautiful day.
A small part of himself envied Regulus for marrying into what had become a huge family, but the better part remembered that Snape led the clan, and the green sheen over Harry's eyes would dissipate.