you bring up a great point… what if they divorced… how would you know. What if they moved or bought a house shortly after the wedding.I rarely do cards anymore but when I did it would be a Thank you the week following and maybe a Christmas card. If i was sure they were still together maybe the first anniversary IF they were a memorable couple. After that I likely have them on Facebook and use that
...I don't play around about it!
I recommend all DJs put a "24 month No Divorce" clause in their agreements!