Hong Kong, Hong Kong
The tour guide, "Cisco", was excellent; obviously very experienced and succeeded in keeping everybody up-to-date about the locations, time to spend, meeting points, recommended purchases etc, in a quick methodical way. The time taken from hotel pick up to arrival in Macau is a few hours, so it is a very long day but worth the trek.
Make sure you bring your passport as it is required on arrival and departure in Macau. Try the portugese egg tarts at the temple stop - they are a must. Only criticisms would probably be that more time at the tower (to try one of the many jumps on offer) or in the casino district would have been nice. In addition, the tour only collects and drops to certain hotels so you may have to get up a bit earlier to ensure you are at the meeting point.