On the other hand, I guess your girlfriend didn't ask you to kneel down. I guess, your girlfriend said that you had to get down on your knees to propose, or you wouldn't marry you, and you immediately refused. Your attitude makes your girlfriend very disgusted and insecure. In fact, girls sometimes don't need anything, but more need a feeling. It's like saying, wife, do you want the stars or the moon? I'll give it to you now. In fact, what she needs may be a sentence from you: from now on, you are my wife, and I am willing to do anything for my wife. In the future, I will only be kind to my wife and do as my wife says (something like this).
Now my suggestion is: Say OK to your wife first, and let her see your sincerity. This woman is soft-hearted and doesn't want her husband to kneel in front of so many people. Maybe you won't have to kneel down and get a kiss, hehe. But don't let her think that you are joking with her at this moment. If she thinks you are insincere and asks you to kneel down, I won't be responsible, hehe. Once again, this is our wife and I will do anything for her.
Good luck and happy wedding.