Gaining access to these VIP previews will require passholders to visit SeaWorld parks at least three times before the end of 2021.
Both coasters were originally scheduled to open in 2020.
2021's new attraction lineup ranges from record-setting roller coasters to an immersive hotel experience.
Iron Gwazi will be the world's fastest and steepest hybrid coaster when it opens in 2021.
21-year-old Jacob Kaminsky, who died in an accident at the Orlando StarFlyer Monday, had worked on Busch Gardens' Iron Gwazi coaster.
Also delayed will be Emperor, Pantheon and Ice Breaker.
This is one of dozens of liens filed against SeaWorld by vendors and contractors for unpaid work.
Busch Gardens Tampa Bay's reopening plan doesn't include a proposed date for welcoming back guests.
This could impact SeaWorld's two new coasters in Central Florida, Ice Breaker at SeaWorld Orlando and Iron Gwazi at Busch Gardens Tampa Bay.