There's a question you need to ask yourself, why would someone pay to fly you to their theme park and photograph their park when they can hire someone in their area?
A theme park, even a small one, would need regular photos for different seasons, special events, new attractions, and everyday candids for promotion. A marketing manager has a limited budget to work with and I can't see them paying for a relative unknowns flight and hotel plus the usual fees when they could hire a local that's a short drive without the added fees.