Would it be offensive to say good morning to your date every day?

Of course I won’t be disgusted. Since you are on a blind date and want to get married, sending a good morning every day can make the other person feel that you are polite and caring, and they will reply to you if they like you. If you take the initiative, you will be able to generate more topics, thereby developing feelings faster and achieving the goal of getting married.

It doesn’t matter if the other person doesn’t like you. It doesn’t matter if he doesn’t reply to you if you send him good morning. This is good for both parties. If you don't call each other, you can disperse early. You can also find a better blind date without wasting each other's time.