If the column is small, it can be decorated with flowers, yarn, cloth, silk flower, ivy and other things to make the column a part of the venue decoration; If it is bigger, you can post your posters, wedding photos and so on. And adding a little decoration will make you feel happy and warm.

It would be nice if two pillars could be made into arches.

These are all suggestions. I don't know how effective it is until I see the scene. The most important thing is to find a wedding and make a plan for you.