From my vague and blurry memories of dating:
Do not pause and wait for me to open the door for you.
I often will open the door for you because i'm a chivalrous femme like that, but if I let you get to the door first and I'm all fancy for a date, I will act like I don't have arms if you pause and wait.
Brains and kindness are far more important to me than money.
Be yourself but be your best self. Don't try to be somebody else.
Do not defend strangers for flying the confederate flag. Do not say they aren't racist. Do not spend the rest of the night saying "I am not a racist - I hope you don't think that."
Please don't use the word "retarded" to criticize or make fun of people or ideas.
Inexpensive dates can be the most fun - but if you're paying and a waitperson is involved, please tip well. Cheaper food but better tip wins hands-down over expensive food and so-so tip. Also please treat anybody serving you like a human being whether it's at mcdonalds or fancyfrufru mcgees.
It's cute when it's obvious a person has put thought and creativity into planning a date - even though it's usually the awkward moments that make it obvious. It's also nice if a person can go with the flow and not be rigid about the plan.
Hanging out like friends would is often my favorite kind of date.