Oak Room brides @JT - Centerpieces

So I have sample Centerpiece appt with my florist coming up on August 9th. I am excited. She asked me if I wanted oblong, cube, or round centerpieces. I said oblong knowing the ceiling are low. BUT JT will be using my centerpieces for my ceremony, My concern is will oblong pieces fit on those columns they have in their ceremony????


TIA