Macau (old town) and Cotai (new casinos) are very different. Cotai is across the bridge and used to be swampland, now it is acres of interconnected casinos, hotels and shops selling USD 100k watches and USD 1 million gold statues of winnie the pooh (I kid you not!). On some days hotels would cost 20% of the HKG price but can be expensive on weekends, and have some nice resort facilities (I stayed at a huge suite in the Sheraton which doesn't even exist in the Kowloon Sheraton and cost less than a room would). Service was comparable to Hong Kong standards (quite good). It's worth visiting to see why it makes 700% more money than Las Vegas (even now), but not the kind of tourist attraction that Hong Kong offers.