Depends on the restaurant really. You can order a nice bottle of wine to share and save the pint for later.
You'll know the dress code I assume. And for cutlery remember, outside in!
Arrive a few minutes earlier than you've arranged and wait at the door to go in with her.
Don't eat anything that makes you messy!
In a decent restaurant they'll always bring the bill to the man so it's up to you how you want to handle that
Anything more specific just ask