My trailer does double duty when not traveling.
First, it is our "guest house", very nice for my Cousins to stay when in town visiting and provide plenty of power for A/C and anything else electrical they may need. They have their space and I have mine.
Second reason, dedicated 30A removes any issue of a shared circuit.
Third reason, dedicated 30A RV connection bypasses GFCI requirements so no nuisance GFCI trips (had that happen a few times with previous TT).
Fourth reason, gets rid of the need for annoying 30A to 15A adapter.
Fifth reason, no more need to run extension cords through the yard, just plain looks better and much safer. Ran conduit out to trailer pad then pulled wire brought it up to a outdoor breaker panel with two breakers, one for the 30A and one for a 20A GFCI outlet plus put up a yard light that runs dusk to dawn...
Priceless!