Mbo, this will sound kinda dumb, but check the batteries on your camera, and be sure to pack it where you cannot possibly leave it behind. It's amazing the tricks these little gadgets will play in important moments like meeting cyberpeople. :-)
Have a great time, relax and be yourself! No point in going all that way just to turn into someone else when you meet Mario...To make sure he's being himself, check the inside of his elbow surreptitiously. If he's a pod person, there will be a birthmark there.