I had the same impression.  I got so bored through it I started to count how many times he stumbled on his words (4 that I heard).  There were a lot of words, but nothing that you could put together and say hey, this is good.  There was no plan layed out at all. 

McCain said "I will stand on your side and fight for your future".  Really?  How?  No response.

After the first 20 minutes I also became quite irritated at his cocky, I am experienced attitude.

I was really expecting so much more about the future, not the past  I know what his past is but I really wanted to hear some sort of plan for the future.....got nothing.

It was a pep rally, not a speech for a presidential candidate.