Whether on-premise or off, catering can be a lucrative extension of your brand. But just as with the in-restaurant dining arena, the economic downturn has changed the rules of the game. Corporate events and high-ticket expense account dining have dried up. Weddings and other social events are smaller in size and budget. Fancy and formal are out; casual, creative and flexible are in. Caterers' new marching order: Do more with less—a lot less.