I watch PPVs at a local bar and take note of the crowd as well. The biggest crowds I've seen were for some wrestlemanias where there was not a seat to be had and they had people queued out the door to enter. The smallest crowds I've seen were, well, no-one showing up for WCW PPVs until they finally just stopped ordering them in their death throes.
For Unforgiven, the crowd was smaller, altho not the smallest I've seen. 3 booths actually went unoccupied but they did fill up (with 1 person) after a while. 3 tables went unused, but there were people in the pool room instead of it being totally empty. About 20 stools were available. I've noticed a big drop in WWE merchandise worn/carried in by fans. I saw just two shirts: an old DX shirt and an HHH shirt.
I also noticed the Austin fans who were noticeable for their "What"? chant aren't showing up.
Benoit didn't get a reaction. Nor did Eddy. HHH didn't get a reaction, but a couple tables emptied out after his match. HLA got a mild reaction. Brock got no reaction, altho midway through his match a patron got into it with the employees and was thrown out on the street which distracted everyone for a bit.