Hmm, they did reduce the capacity:

>The expansion of Thunder Ridge, increasing capacity from 10,000 to approximately 50,000, is the latest in Big Cedar Lodge’s proud tradition of hosting world-class hospitality and entertainment experiences that span a variety of recreational markets. These enhancements – which have been done without any tax dollars – will more than double the previous seating capacity, without sacrificing the venue’s stunning nature-based charm. It provides another grandiose outdoor venue for a resort that hosts 7 million guests per year, and a Branson community that attracts 10 million visitors every year. July 2022