Since stage-dooring is still hit-or-miss (although lately it's been more hit for me), what I will end up doing is writing and sending a nicely worded letter to the cast and/or intended performer (If I have a Playbill request, I'll usually include that and the SASE).
I've gotten some lovely responses too. I wrote Kristin Chenoweth a heartfelt letter about how her advocacy for the LGBTQ community and how her using her talent and platform for greater good meant the world to me (especially since I had struggles with being gay and growing up Christian). She wrote back on my Playbill - "Dear Jordan, Your letter made my year. Remember always that God loves you and so do I! - Kristin <3"
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www.ebay.com/usr/missvirginiahamm