Attending symphony kilted, vest or no?

[meinfs]

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If the majority of attendees in Ogden wear pretty casual clothing, I suggest you dress similarly: a shirt (and tie?) topped by a light, stylish "sweater" matching a base or over-stripe in your kilt. Definitely wear a leather sporran to match your belt (if you choose to wear one) and your shoes.
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Smashing! but blending in, too.

I would say if you wear a kilt at all - you'd immediately stand out. I was semi-formally kilted at a recent Irish Tenors concert - and everybody was dressed in all sorts of garments (dressy, casual, rugged).

So, wear what you'll be most comfortable and confident in. Vest - yes!

And enjoy the concert!