Hi Bill & Jan,
I hope my reply isn't too late. You're probably already gone! Oh well, here goes anyway....
You sound like us. We bought our coach in the fall of '03 and we've just barely begun to use it! We've spent a total of 4 nights in it so far.
You'll love your Sightseer. All you need to do is enjoy yourselves, keep that Infocase handy that has all the owner's manuals in it and don't be afraid to refer to it. There's a lot of good information in there. I can't tell you how much I learned from reading all that stuff!
A few things you might need to get for your hook-ups include a water pressure regulator and fresh water hose as well as a 30A to 20A adapter plug. A surge guard of some sort is also a good idea, but I don't have one yet. I also keep an extension cord handy. The sewer hose we got with our rig was pretty short so I got an extension kit for that.
Simply make sure EVERYTHING works from the jacks to the slides, the genset, all the appliances (LP and electric) and be sure to use it all even if you don't need to. This is your shakedown cruise and if anything needs fixin' you'll want to document it and get back to the dealer for repairs.
Above all have a great time and have fun.