Santorini is divided into two parks. One is an amusement park, the other is a water park. Yesterday we visited only the amusement park. We intend to visit the water park soon so will do a separate review of that.
The amusement park costs you 50 baht to enter, which is pretty cheap but entry is all it gives. A lot of thai people seem to go there and wander around taking advantage of the many 'photo op' locations, of which the park has provided many.
Its got a greek/spanish/moroccan feel and is quite clean and nice to walk around.
The amusements range from 120 baht to 480 baht per person to ride, so a family with two kids could rack up quite a hefty bill by the time they have finished. The 120 baht ticket buys you three rotations on the ferris wheel, which I felt was over too quickly.
There are some good food outlets which are not too expensive given it's a tourist trap, and a couple of nice tea / coffee hangouts.
There are plenty of shops inside but the prices are very high by Thailand standards. I liked a tee shirt in the Ed Hardy store but could not justify 2100 baht for a cotton print T-shirt. That's even expensive in my own country currency, especially when I know that these T's are made in Thailand and are purchased from the manufacturers for less than 300 baht.
A number of the rides were not operating which was surprising given that its deep in high season right now.
All in all a pleasant enough experience, if you need to kill a couple of hours.