Canopies and tents can now be customized in a huge variety of ways. Perhaps obtaining a pop-up canopy and having it screen-printed with the bride and groom's name on the hanging flap would be a nice touch. Or have it customized with full cover canopy digital printing. You can even print in full color or add a photograph for another unique effect. Consider a canopy with the supports made to look like pillers or have one designed with a white dome and add a chandelier hanging inside.
With your imagination and the canopy company's abilities, the tent will be a hit at the outdoor wedding.