If you could spend a day with any fictional character, who would it be and what would the two of you do?
That's too easy. The Doctor. no question.
What would we do? well, I don't know, do I? I could tell him, take me to...meet King Arthur or let's go to visit a planet made of chocolate but I'm sure neither of those things would happen. so it's best to get into the TARDIS and let her choose.
But I'm sure there'd be an awful lot of running.