The site is snappy, visually impressive and with a well thought out user experience, tasteful upsell and in general clear communication.
At least it launched and managed to avoid all the pitfalls of corporate politics leading to bad architectural choices leading to a very expensive and poor implementation, which is a much more difficult challenge by itself than most people realize.
It's important to remember that:
* very few great developers/designers will work for Four Seasons on the cheap.
* it'll mostly have been well paid consultants earning $100/hr and up
* it is very likely that the project has had multiple iterations to reach it's current state, all hidden behind a single big release.