This video is from the official Shane Douglas YouTube channel. He gives some great insights on wrestlers watching other matches on the card that night so that they can adjust their matches based on the what the crowd has seen. These "audibles" helped Shane realize not to duplicate in his matches what the audience had just seen.
He discusses also regional differences in terms of how the crowd may react, using the example of a hypothetical ECW match between Shane and Sabu starting in Pittsburgh. Assuming that match went well, then the next night there would be the risk of the same match not working in Cleveland or Chicago.