Use a discreet recorder. When casino security fusses about photography and recordings, a tablet PC or a memory stick recorder that looks like a phone is less likely to attract attention.
Water. You need more than you think.
Locate the restrooms. Due to Water and the coffee you need to stay attentive from 9am to 9pm.
Wear comfortable shoes. The Venetian was too pricey so we're at the Imperial Palace - only two casinos away but add in the size of the casinos and the fact that the conference space is behind the casino floor and it's a half hour walk from the room.
Put your camera, business cards and the other things you want to grab often in a pocket. Put them in the same pocket each time.
If the schedule is available in advance try to prepick sessions but expect them to change. Add the sessions you're interested in to your calendar and synch that to your phone. My Vario has the conference sessions in because I used the iCal links on the MIX site to put them in Outlook. I had to update the times by hand - RSS simple list updates now please! - but I have the descriptions to hand, and I get alarms for sessions.
Go party. I grab people at the end of sessions when I can but I also look for them at the party and in the labs and chat slots. And now - I shall go party