If a guest specifically asked for your business card and had no intention of seeing the main I don't get why you said no.
Realistically I'm much more concerned about pissing off planners than other photogs.
Because its not my role. Part of the perks of being a main shooter is to network. Just like I do not send photos to the florist, planner, officiant, etc. because it is not my place. And what if the main saw me giving out my card without knowing what was going on. I am find with a second handing out their information if it is something like a friend that they want to catch up with, but if it is for business I believe it is completely uncalled for.

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