We had the dealer where we bought our Interstate on speed dial for a month or so after we bought it.
We not only didn't understand how to do some of the basic operations, he didn't show us where the hot water tank access was for winterization. Not in the manual, no way in hell a newbie would find it on their own.
Our toilet also leaked immediately, and we made three trips back before it was fixed properly. Come to find out, there was a pipe cut too short, thus the leak. After doing who-knows-what the first few times, he finally replaced it with a flexible pipe, no more problems.
Dealer was over an hour away, had to leave the Interstate and return for it THREE times.
Seriously, stay overnight with it at the dealer, at least. It will be worth the time it takes and there will be someone there to answer questions and show you what you need to know.