Odds of Getting In
Like most hourly, customer-facing jobs, getting in is less about prerequisite skills, and more about availability. "Are you hiring?" is a helpful phrase you'll certainly come to know on your job hunt.
Whether or not you receive a favorable answer will be entirely up to chance. Fortunately, there are usually multiple places an aspiring usher can find employment in his or her town, so cast a wide net, be a little persistent, and you'll be ushering in no time.