Dual AC Question - 364BHL

[Silver_]

Hello, all. We are preparing for our first fifth wheel purchase and are looking closely at the Cougar 364BHL. This floor plan really meets our needs for a recreational fiver.

We camp most often in the Texas heat, several times a year in the dry heat of the high plains summer (with a few trips to the cool of the mountains). We see 100 degrees fairly often, so AC is a definite consideration. We definitely want the factory option dual AC (15,000 main and 13,500 upstairs, both ducted), but this leads to questions

We sometimes camp at sites that only have 30 amp service. I know that we won't be able to run both conditioners on 30 amps.

Question 1: I'm assuming we will be able to turn off one of the units in this situation?

Question 2: Will the one unit that is running work to cool the entire vehicle (albeit, not as efficiently)? In other words, do the units share common ducting or are they separate? If I turn off the bedroom AC, will the main AC still cool that area through the ceiling ducts?

We really don't want to be tied to 50 amp service only, so if the factory installed optional AC creates a separate closed system, then we will opt not to go that route. I can't find if this model uses racetrack ducting, and I honestly don't know if would trust a salesman from our local volume dealer to answer it knowledgeably. I feel sometimes they will tell you what you want to hear to close the sale and shrug it off if they are wrong later on.

Thanks for any insight!

--Nathan