Seamus pulled up a chair, his bottle in hand, and he sorely wished he had his own flute. He was tempted to drink from the bottle, but thought it would embarrass the hell out of Hermione if she caught him. Instead, he pulled out his wand, and cast a quick spell, changing a fork into a semi decent silverish cup. He poured out some of the champagne and took his own drink.
"Sure I know them. And yeah, I can sit. I should be able to," he said with some confidence, "I'm volunteering," he said, flashing her a bright smile, even as he sat up and leaned towards her in a more confidential pose, "So you remember what we talked about?! Brilliant! But I don't know," he said, sitting up a bit and rubbing at the back of his head, "You could try some names, but I'm afraid I never much matched your faces to your names," he said, flashing another smile at her, "No offense I hope," he added jovially.