"What else do I have in that bag? Oh, just a few bottles of golden wine from the train shop, and some cups. And. . . ah. . . just a little something to, um, smooth the way to enjoyment." That is to say, a small bottle of sesame oil. Acquired sneakily from the kitchen. Curufin is certainly considering Glorfindel's facial expression in the right light -- definitely flirtatious! And so is Curufin's expression flirtatious, if not outright wicked.

Yes, they can knock themselves out here on their vacation and fall into their bunks, once back on the train, to make up for the sleep they are certainly planning to lose here.