If I were to buy a gold pass voucher from Kroger tomorrow, but won't visit until next month, will I still be able to redeem the pass? Or would I have to buy it online instead?

In previous seasons, they could be redeemed (as gold passes) at any point in the season, as long as they were purchased by the Memorial Day deadline. I can't confirm this for the current season.

Your best bet is to call the park for a definitive answer. Be sure to post what you hear, in case someone else has the same question. 513-754-5700

Out of curiosity what are the options after the Memorial Day deadline?  Platinum is still available, is there not a KI only season pass available?

^ After Gold goes away, Regular and Platinum are the two options at KI.

Regular passes do not include parking, ERT, most special events, food/merchandise discounts, or Dinosaurs Alive. Most importantly, they expire after Labor Day, so they're not valid for fall operating days or for Winterfest.

I called and they said that it would be fine to buy it while the gold pass is still available and redeem it after it's gone. Thank you!