Yes; that includes paper, not just coins. I think you can overpay; i.e., pay for a $4.50 day pass with a $5 bill.
There appear to be options to order paper tickets online, and to purchase electronic tickets thru a smart phone app. I haven't tried either of these options. There are links near the bottom of this page.
Our Authorized Disney Vacation Planners are here to provide personalized, expert advice, answer every question, and uncover the best discounts.
Let Dreams Unlimited Travel take care of all the details, so you can sit back, relax, and enjoy a stress-free vacation.