It has been done before, with the equivalent of just a 35mm fixed lens on your camera.
As has been said, it is more about learning how and what to shoot, than the gear.
So learn and practice practice practice.
But when you practice, it has to be ACTIVE practice, where you are applying what you learn, and observing what happens when you practice, then make adjustments/changes as appropriate. This is applying feedback to your practice.
Repetitive practice of the same thing without applying feedback won't get you far.
Part of the learning will be to learn what the practical boundaries are of your gear, then learning if/how to overcome some of those limitations, and accepting other limitations.
As for the wedding.
Get a few friends and do a mock wedding. This lets you learn and practice what and how to shoot in safety. You can repeat a troublesome shot over and over again, until you figure it out. Or go stop and research the problem, then do another mock wedding, and try again using the ideas from your research. The more accurate the mock wedding to the actual wedding, the better your practice will be.