With the class C, if you install a level near the driver seat, you only have to get out once - to lay out the levelers. With a trailer, you need to get out to check the level, get in to pull forward, then get out again to lay out the levelers, then get back in to back on the levelers.
It's not a major thing, but it's nice when it's raining.
I have never used stabilizers for my C. It's 21ft and I find the tires are enough to limit movement to my satisfaction. It certainly doesn't do the seesawing that a trailer can do.
If you are really sensitive to movement, you may want to add a couple stabilizers back there.
You can always rent a car if necessary. If you are going into the downtown area of a major city, you will likely have trouble with parking. That's mostly because you will be too tall for parking structures, so will need to find outdoor lots.
You can also get scooters or bicycles for cruising around town. Scooters are nice because you can hop an uber, cab, or bus with it without hassle.
