Ideally you would have some community service experience to discuss in your application, but this will not mean an automatic ding. I think you can use your experience working on the drug awareness and womens rights campaigns to help show your more community-oriented side, but don't force it here. In other words, don't risk sounding like you're making a token effort to "sound like you care." If these campaigns were truly meaningful to you, then great. But don't tell the adcomms what you think they wan tto hear -- they'll see right through that.
Overall, art director at an ad agency is a very unique profile. I think this will be to your advantage.
Scott
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Co-Author, Your MBA Game Plan