We did the Iowa-Alaska trip in 2012. Yes, the fuel tanks are full when you pick up the unit, as is the water tank. There is a pail, screwdriver, pliers, rags, etc. The unit is completely equipped for all normal traveling and light maintenance needs.
Anchorage GAH unit check-in was simple and hassle free.
Check out my wife Charlotte's blog. She did a fabulous job. All in costs with return airfare, fuel, campgrounds, dining out, incidentals, etc., was about $400/day for our 21 day trip.
http://blog.travelpod.com/travel-blog/travelbug1054/1/tpod.html
