Hey Bro Derrick,
When i first heard of the 8WG-1Guy thing it was quite taken aback myself.
But as
Bro Yoneyama suggested, it is probably a case of visual stimulation more than physical
(can't see how the guy had the strength to go through all 8 in such a short period!).
As for Macau, i can't comment on that. From my personal point of view, your best bet would
be in DG for this sort of thing - a higher chance to get what you seek plus it is more cost
effective as compared to HK/Macau.