Interactive

Preparation will save your life. Prior to presenting anything to a potential major client like Sony (assuming you can get an appointment with the right people), make sure you have prepared yourself thoroughly. Know your material inside and out. Anticipate questions that may arise & be prepared to answer them. Make sure your marketing proposal has covered all the bases, and ensure you tailor your presentation to the audience.
Above all else, realize that any presentation made to a company like Sony is major – treat it as such.