You can do casual and dressy 👍
My wife dressed casual and I dressed business, we are both essential and first responders.
Casual
Yes, not formal but nice suburban dressy.
Yes
We were very comfortable in casual attire. Most tables were similarly dressed.
It's causal. I had on jeans when I went with a sweater and nice boots. Other people had on jeans and sneakers but some also had on slacks and collar shirts, no tie.
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