You've just discovered the down side of going to an RV show to just "browse." (Or maybe it's actually the up side??? - LOL)
Regarding your question: I don't have a 2506S, but on my Mini Lite 2503S, all my outlets are all on the same circuit, which is protected by the GFCI outlet in my bathroom. Based on other threads I've read, I'd bet that yours is probably the same. It seems to be a pretty standard way they wire these things.
However, looking at pics of your unit online, the outlet in YOUR bathroom did not look like the actual GFCI outlet; it looked like a normal outlet with the "GFCI Protected" sticker on it, so the actual GFCI outlet is located somewhere else. You'll have to look at all your 120VAC outlets to find it. When you find it, push the test button so it turns OFF. Now test ALL your 120VAC outlets and see which ones are dead (I'm guessing it will be all of them - except for your fridge and water heater, of course). In any case, any dead ones are powered through that GFCI.
That means there's a 120VAC line from your power distribution panels' circuit breaker (located under your fridge by the entry door) to the GFCI and
then to all the other breakers. In other words, all the others are daisy-chained off the GFCI outlet. So if you want to power any of the affected outlets separately, you have to break this daisy-chain. You'll have to run a separate 120VAC line from 1 of 2 places: either a separate circuit breaker if your power distribution panel has a spare location (this is best) OR you would have to tie into the GFCI outlet on the feed side (i.e., upstream) connections (not best, especially with the crappy RV "speed box" outlets - see discussion below).
If you aren't familiar with 110VAC wiring, you should get someone who is.
Note that these RV "speed box" outlets (see pic) have snap-on backs that trap the wiring and have metal slots that slice the wiring insulation and make the electrical contact.
They are quick and easy for the builders to use and since the connections are internal, they don't require standard electrical boxes. BUT: you can only put one line going in and one line coming out. They don't handle 2 lines going in and/or out. Here's a video that will inform you.