At 250 million baht (approx. $5.8 million), it is the most expensive film in Thai history.
The actress who plays Suriyothai is actually a princess of a lower rank. In Thailand, each successive generation of royalties "decreases" in rank by one level. The actress is the lowest one. She is a "Mom Luang". One doesn't have to use the royal vocabulary with her.
Not long after the death of Suriyothai, Ayuthaya was burnt to the ground by the Burmese.
The name Suriyothai in Thai roughly translates as "dawning sun." Similarly, her rival's name, Sri Sudachan, means "moon lady."
The highest grossing Thai film in Thailand to date.