That's correct April.
Essentially everything inside your trailer is protected by the regulator that is fitted on the outside of your trailer. For small appliances they all require an internal regulator to handle the high pressure of the mini tanks. So in my case I run my Coleman 2 burner stove, Coleman lantern and Weber Baby Q220 from my 20lb tank via a couple of adapters and 3 hoses. However, as I mention in my thread
it's not the cheapest option to use.
I think the cheapest solution is probably a single T adapter with one T end running to the trailer regulator and the upper T end holding a propane
tree. Coleman sells both of those products. For me, however, I wanted the flexability to run our kitchen the way we have it.