
Most people are perfectly okay with spontaneous RP (and let's face it, the people who aren't are usually buttholes anyway). If you're ever in doubt, take a look at their search info. A lot of people will have "walk-ups welcome," which means they're fine with random RP from strangers!
And if you're still left wondering, feel free to send the person a /tell and ask if they'd be receptive to some RP from your character.
