I just wanted to reinforce something I heard during the webinar and at Empower last year.
If you are able, set up the Empower VM on your own laptop and use it in the labs!
The setup shouldn't be too hard to do (and the wonderful folks in the Information Center can help onsite, if you need it)
Unless I'm mistaken, you can get into any lab where there is an empty chair. Some of the labs run out of workstations quickly.
And, you get to take the lab home with you. I think the VM last year had 30-day or 60-day eval licenses on everything, so you can practice what you learned and show the folks back at work.