There's a lot riding on SeaWorld Entertainment's (NYSE:SEAS) quarterly report on Wednesday.

The theme park operator reports for the first time since going public at $27 a share last month, and the stock hit fresh post-IPO highs earlier this week. 

Blackstone Group (NYSE:BX) will definitely be watching. The private equity firm sold 16 million shares in the IPO. Yes, it may have left a lot of money on the table seeing where the stock is now, but it still benefits by having a controlling interest in the chain.

Six Flags (NYSE:SIX) and Cedar Fair (NYSE:FUN) will also be watching. As regional amusement park operators that rely primarily on seasonal operations, SeaWorld's report may be an indicator of things to come for Six Flags and Cedar Fair. Most of Sea World's parks are year-round locations, so we'll get a an early read on guest traffic and per-capita spending that should carry over to the seasonal park operators in the coming weeks.

In this video, longtime Fool contributor also discusses the importance of not disappointing investors in your first quarterly report as a public company.