i can’t wrap the dance floor at my venue

A static picture or text may be added as an edited-in effect for the video.

Another option may be some sort of lighting that projects your initials to the floor.

You could do custom lighting with your initials! I'll attach an example:

These are called Gobo lights and are custom. Best wishes.

I was looking a little more into the details. Since they are using light sources as projectors, you would need to determine a location for the projector. I'm not sure who is good for getting this set up.