How to transform gym into elegant reception?

so ladies and gents, i'm feeling quite stumped. How oh how, can i make this gym into something spectacular. anyone have any brilliant ideas? i'm thinking maybe some uplighting in our corresponding colors, tons of candles and christmas lights under the table cloths. and that's all i've got. please tell me there's a classy and modern way to upgrade my venue space!!! btw, they will be repainting the walls white, and covering up the murals.