I'm a little confused what you mean here? Every park has a limited capacity and all people in the park have paid? But they still have to offer guests value for money, or they won't return / be disgruntled.
Thorpe have made an effort to improve throughputs across the park. Stealth is a prime example of this.
I'm not sure how much it's affecting throughput, but the park will no doubt be aware of it. No doubt the park have a list of things they'll want to work on, hopefully alongside Mack, to help get things running smoothly.
My bigger concern regarding throughput is whether they can keep up the high standard they've set in the station. The park have been sensible and aren't running it on more staff (I believe they're running it on 1 op and 4 hosts, and that is the bare minimum it would need). But they're working their socks, and clearly have a good team. Can they keep that going all season? What about in future seasons? All well and good running it like that now, but if they can't do it when you've got the extra queues, etc, it's a problem.