Leave a good a good first impression and don't worry too much about what they think. Ultimately, they are going to go back to thinking about whatever silly things they were thinking of before. This does not mean scoff at them or write them off as non-entities. You wanna show your good side if meeting during the day, or your nice, trustworthy fun side of out at the bar getting drinks. Unless I know them personally and like them as I get to know them, I think the best course of action is to keep it short and sweet. You could even keep it basic as far as conversation goes so as to avoid over sharing, but if you can hold ground you might as well have a nice conversation. The last thing you wanna become is a joke amongst them, so keep it chill and don't try to neg them all.
Carpe Noctem
You'll know the truth by how it feels.