I don't know what your benchmark is, but lets say its 15,000 and 5000 more, show up than said 15,000...
That's $250,000 less in gate revenue.
However once in the gates if those 5,000 spend $50 on food and apparel it equalizes. Thats high I know, just showing what it would take to balance the current money grab.
However If any or a few among those 5000 become long term supporters they exceed the $lost $25 in ticket revenue.