account protection

Is it possible to watch my Apple TV in a friend's house (on their tv) without sharing my account details? I don't want to set it up on their tv, just a once off viewing of a film from my macbook to their tv. My worry is that I don't want to share my password which links to my iphone. Also I don't want to get billed for any films their kids may later order from my account if Apple TV is set up on their TV and linked to my credit card. How do I share my Apple TV without compromising my privacy? Sorry, I'm not a techie! Thanks.