He didn't want to be in the cabin. Honestly, the only reason that Guy Avery wasn't obsessively trying to find a way home as the presence of Gellert Grindelwald and the opportunity to learn his own future. He had children at home, three of them- and apparently three more would be born, if Lestrange were to be believed. He had thankfully taken the advice of Hugo Weasley and gotten himself new clothing before the curse had settled upon the cabins; his black wool New Years suit had been switched out for a pair of khaki slacks and a button up shirt and a gray vest.
Looking out the window, waiting to see anything he might know, he had been sipping his cup of tea slowly and trying to create a plan. He was stuck. He could not figure out the magic to get out. He had to trust that Grindelwald would share a way to get out if the man discovered such a thing (and if anyone were to discover it, it would be a great wizard such as he). He supposed it could be worse- he could have ended up in a house full of muggleborns.
When a young man, a boy really, entered the room he turned and looked at him. The owl and the uniform were enough to confirm to him that this was a lad from a family with money and that he was pureblooded. Good. Guy could deal with both of those things easily.
"Good morning," Guy said, putting his own mug of tea down. He was not used to cooking for himself, never mind actually offering to help someone else: that was what a house elf or a wife was for. He hadn't boiled water for tea in so long he'd almost forgotten how to get the tea leaves right. Almost. "Would you care for tea?"