Agree with lagomez here, dont be too intrusive, I wouldn't send a resume but would ask any insightful questions I had. Just a nice thank you will be sufficient.
These events are great and can be a perfect way to gain knowledge about a program but thats about it. I was really gung ho about going to as many as i could but the adcoms meet so many people its not going to be that big of a deal, unless of course you make an amazing impression and continue that with communication. The adcoms are probably on their way to another city to do it all over again and again.
There is a fine line between excited and pushy and unfortunately for us we dont know where that is in the adcoms opinions, and it could be different form person to person. One may love to give you resume a quick look but another may not.
Either way its not worth it.