Its not even about attendance.. its the TV ratings that are the biggest impact. Those depend on how the team is performing. And I believe after next year the contract is up so they may want to have a competitive year next year to try to get as much $ locked in on the next contract before taking a step back.
As well if they do a multi hundred Million dollar renovation on RC in the next 2 years they will get people wanting to go see the park because of that.