What to wear?

[cwr89]

Ok, so this weekend is the Dayton Celtic Festival. I am thrilled this is the first year I am actually able to go. I am going on Saturday evening.

I am wearing my Irish National SWK.

Now, this is the part I want your opinions on.

how should I dress?
I don't want to look major dressed down, there will probably be a few (but not all) people who are not being courteous ambassadors of the kilt there and I don't wish to represent myself as one. Now I don't want to wear a full PC either. so do I go casual or semi-casual?

should I wear a polo (if so what color)? should I wear a T-shirt? Should I wear my Gaelic Storm T? (its gray and doesn't go with Irish Nat well, however they are one of the reasons I am going to see them)

Black belt or Brown Belt?
Black or brown sporran?
Dress shoes or Chucks?
traditional or new age sgain?

I am planning ahead to see what all you think.

thanks!
~Casey