Different contracts for different events?

I was just wondering if people have a different contract for different types of events? For instance, my contract is pretty much for the one shot gig... party, corporate event, whatever, it covers the main stuff. But I'm looking into trying to get repeat clients for the summer, say a shopping mall or monthly movie night type thing. Do you think I should come up with a second contract that deals mainly with those types of venues for repeat business? I've never seen one like that so I'm not sure how I would word it or what information is more or less important for that type of client. Anyone have any words of wisdom?

Just when I though I created the perfect contact... now all these other 'what-ifs' come up. LOL

I am finding that one contact may not be as one-size-fits-all as I hoped it would be. So maybe a contact for private parties - another for large events - another for times when I barter...