Anniversary Outfit ideas!

Need outfit ideas! My husband and I are driving from Maryland to Kentucky for our 5 year wedding anniversary weekend(valentines weekend) We are eating a catered dinner, there will be a dj playing music on a steam boat. Website says casual. I don’t want to wear normal clothing but I don’t want to be over dressy. Comment photos of ideas. I’m plus size so friendly and practically options, please. Thanks😘 photo below is to show what I’m working with