Are you faced with a bland ballroom? Besides adding flowers to the n'th degree, there aren't many options for jazzing up a ballroom. Here is one of my best suggestions, and usually one of the least expensive: Uplights! You can rent them in the Atlanta area for about $40 a piece, have your coordinator set them up for you, and they can really spice up a room!
Lighting is available in all different colors, above you can see reds, below blue, but they also carry greens, yellows, pinks, oranges, purples, and just white. Hopefully you can find something that will work for you and your event space!
When picking out your lighting, be sure to consider how it will look on the walls. If there is a choice of two color reds, and you have yellow walls, go for the deeper red if you want red, otherwise, you might get orange!
You can also get fun shapes! They add a lot of texture to the ballrooms, and can really make a tent stand out! I suggest borrowing the light for a short period of time to try it out in the room to see if you like it. Also see if you can borrow a few different color screens to see what works for you space!