Videotaping the dpi is a great idea...we bought a Zinger last year, and someone made the suggestion to us. We have already used it a couple of times.
Double check the de-winterizing process. The guy doing our dpi showed me where the valves were, how best to get to them, how to winterized, and told us to simply turn all the valves 90 degrees, fill with water and turn on the faucets to de-winterized. Followed his directions on our first trip our..couldn't get water in the lines...dad looked it over and found the valves had already been turned and set for us...I now have the four valves numbered with a sharply marker and step by step instructions for winterizing and de-winterizing.
Check all your drawers, doors, and storage sections...this way you know they open, close, and latch correctly...you will probably find some of your warranty stuff through this...
Otherwise, I'd second what anaro said...and enjoy your Zinger!