Regulus entered the Leaky Cauldron, feeling a mixture of dread and trepidation. He didn't like funerals, wakes, or memorial services, and he avoided them as much as possible, but he couldn't ignore this one. For one thing, it was for his brother, and while he thought perhaps Sirius would have understood, he didn't want to disappoint Harry by not making an appearance and having at least one drink in Sirius' memory.
He went to the bar and ordered whiskey; the occasion called for something stronger than wine or beer, and he decided not to think about how much he'd been drinking lately.
He took a seat on a stool and curled his fingers around his glass, wondering where Harry was and making a note to go in search of him shortly.