Stopping was one of the last things on Ron's mind. There was a lot waiting for them after this that he didn't really want to sort out at the moment, and as appealing as that bottle was, pouring out drinks made for a lot of time to sit and talk or sit and not-talk, and ... this was infinitely preferable.
Not that it wasn't fantastic for its own sake, of course. He pulled her close when he sat beside her, tugging a little to try to coax her into his lap.