Rap doesn't generally ask permission first.
Well, unless it's possible his face is going to be broken. He likes his face unbroken. It lowers the chances of not being able to see out of his eyes.
So he doesn't ask permission before decorating what areas of the town he can. In many cases, it's
extra decorating; where the residents or shopowners have already hung up fairy lights and wreaths, Rap has added cheerful creations of dry twigs or ribbons in between. He's much more ostentatious where there hasn't yet been any effort, and on one shop's wall is the most ridiculous mural of a sleigh crossing the sky showering presents. (If someone got a very good magnifying glass, they might read 'look at me! I'm from Outside!' in the curls of Santa's beard.)
It's an all-nighter endeavour, and he goes forth as soon as it gets dark. Some people give him tacit nods, so he knows he's free to go wild with their properties, some don't notice him at all, or ignore him, and he ignores them in turn, but he still leaves them a little string of pretty glitter-covered dried leaves. And if people are asleep or gone by the time he gets to a place, he isn't really quibbling. Sensible people are in their beds.
Sensible people also open windows suddenly, and Rap runs from those automatically. His decorations hang sadly from one peg, abandoned.
He'll welcome help where he can, try to avoid conflict where he can, but when the sun is rising he'll have opened up the umbrella of one of the Cafe Cocodrilo's less damaged outdoor tables, swept the snow off the table and the chair, and set his head down to rest, near-empty sack kicked under the table.
[ooc: catch him anywhere from evening to wee hours to dawn. He won't have been able to decorate everywhere, and at least one person is going to think of calling him out for trespassing. He didn't think that part through.]