I let pretty much anyone who asks to ride it give it a shot. I'v been surprised at how good some sorority girls are right away. I guess it really depends on how good your balance is.
Not really worried about anyone speeding away, as I ride on a huge college campus and people know me by now. (including the campus PD) Come to think of it, I might have the only onewheel in Oklahoma rn:alien:
I was going to say I wouldn't sell it, but I like @forzabucks $3000 idea. A 2nd board would be really fun. Obviously - a ridiculously high offer would be compelling too - 1 MILLION dollars - hu-hahahaha!
Go where all the bike/segway tours meet each morning near the radio/tv tower needle thing, then follow them around.
I was in Berlin a few weeks after getting my Onewheel and I was so pissed at myself for not having it as I rented a crappy bicycle to tour the city. Bring a backpack with your charger so you can charge it full when you stop for a drink.
Linke @nat said, people generally don't have problems with travelling. You might also check out this thread for info about a bag that I'm preparing: http://community.rideonewheel.com/topic/524/pro-travel-bag-prototype -- there are also some other suggestions over there of other kinds of bags. While one might not be necessary, it may make things easier for you.