Yes you can do it! I questioned this before I left and some people said yes, some said no. I am here to say that YES it can be done! I presented my hoppers (which had 3 days left on them and were over 3 years old) at the ticket booth and they told me to take them to the main gate. Once I was at the gate, the ticket taker called another person over who took my tickets for about 3-5 minutes, then came back with them and gave me new passes to use that day in that particular park. She also told me how many more days were left on my original passes. Each day that I went, I needed to take my old hoppers and exchange them for new daily ones. Sure glad I saved them!
