Hi Doxiecouple,
Congratulations on your San Antonio purchase and welcome to the Heartland Owners Forum. You'll find lots of useful information here along with lots of friendly people who are always willing to share what they know.
You'll want to do a very thorough PDI with the dealer demonstrating everything. You may not have seen the water valve before, so make sure you get a complete demo there. If you have auto leveling, get a demo and try it yourself a couple of times. If your SA comes with remotes for lights and other functions, make sure you get a full demo there. The A/C and Heater controls may be new to you. Check them out thoroughly. Thermostat fan speed should be set to AUTO btw. These aren't things that are likely to have problems, but operating them may be different.
If you have a refrigerator with icemaker or water dispenser, have the dealer show you the water cutoff valve. You may also want to have them take down the basement wall behind the Universal Docking Center (UDC) so you can see the plumbing and water pump. With city water hooked up, and water pump running, you can also check back there to make sure there are no loose water connections.
Check TV reception and surround sound operation with a DVD. If you want TV audio to go through the surround sound, this would be a good time to ask the dealer to make those connections.
If possible, stay at the dealer location for 1 or 2 nights so you have a chance to really use the entire trailer. You're likely to find a few things that can be corrected on the spot without having to leave the trailer and wait for service.
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