Any tips for a first date?

It's been a while. He's a friend of my brother (has my brother's blessing, good sign) and we're going for a classic dinner and drinks date. Semi-fancy. What are your basic tips, your "don't forget this" tips, and your "most people do _____ but you should ______" tips?
Updates
+1 y
Didn't go well. We didn't click. Thanks folks.
Any tips for a first date?
Post Opinion