I have a Jayco TT with an outdoor kitchen and shower. The kitchen has a sink that is plumbed into the holding tank. We are living in it full time at least until February. With temps dropping into the ...
I would suggest to winterize the outdoor kitchen. The last thing you would want is to wake up to a broken supply line in Winter. If you don't use the sink, hit it with a couple of cups of RV antifreeze. The outdoor shower should be covered or winterized too.
If you have the trailer completely skirted, using a heat lamp or small heater underneath will bring good results, it keeps the floor and plumbing up in temp.