Congratulations on getting an Interview Invitation. There is this guy in our class that is 43, married with a baby girl. Another classmate of mine is 37, married, with 4 children. There are lots of non-traditional students at UMKC and I think it's really cool because it gives us a lot of different perspectives in the classroom. My advice for the supplemental application would be to be as thorough and honest as you can. Make sure the information from your AADSAS is the same on your supplemental, unless of course you have continued to do shadowing and community service since applying. Let me know if you guys have any other questions!