No different to any other agency. Expect the contract to be interpreted in a way that you would never imagine possible.
There are many expats with their families with Parc in Japan. With a big broad brush, expect cost of living to be double that of Australia or 150% that of the UK. Expat life is not up to the level one would get in Singapore or Hong Kong.
Flying is straightforward, lots of rules, but everything really works.