I am going to LOVE this convention!
I now understand why you didn't specify your age until after people had a chance to see your work.
You have a LOT of talent compared to anyone, period! But if people knew how young you are first, how could you be sure that you were receiving honest comments about your route?
Some people are relunctant to critize the work of young people, even when it is constructive critism. You didn't want your route to be graded on a curve. Smart move!
You can now be confident that the positive comments were due to the quality of your work. :Y:
Fortunately, you have a Trainz community here, and will meet many people this weekend who don't consider age, sex, color, or nationality.
We are all fellow rail-fans. They will enjoy meeting you.
Your plan sounds great. Let me know if you have any questions ahead of time.