It won't. That's how I lost a year's worth of playbills/programmes from London, including ones signed by Judi Dench and Alan Rickman. And the ones that pissed me off the most were actually my unsigned Donmar Take Me Out because the glossary of baseball terms was hilarious, and my Coast of Utopia because it had a research list.

The Royal Mail got me all my bootlegs and all my books and all my notes, but NOT my programmes. Seven years later, I'm still bitter. (at least it broke me of my need to collect autographs - I have my pictures with the awesome people.)

If I come in June, I'll probably just be there for the weekend (three days or so) and thus only have a carryon, so I'll be theoretically able to shuttle some things back with a second bag (I don't care if they delay my luggage on the trip back since I'll be at home, after all).