Note: the airport is quite far away from Trat, and the only transportation out of the airport is to Ko Chang with a mini-bus that goes via the ferry at Ao Thammachat pier
Having said that, it’s a very well designed open-air complex with a theme-park style train and well-maintained cunstructions that look like straw huts. A bit like Cancun with a more modest budget.
A geeky geo-anectode: If you search for “Trat airport” and/or “TDX” in google maps, you’ll find dozens of places all around the region. Some even on Ko Chang . As far as we know, this item is the only place that gets even close. This one took real research.