No spare tire with rim?

I'd get Spare Tire/Wheel and tools to change it. Then you're covered even if somebody comes out to help you. If they lost that one socket they need, you have it, etc. The first flat I actually changed on the road, I used a leveling jack to lift the left rear of the coach. That is NOT recommended by the jack people. Also, I had an old system that would let me control each of the four jacks. Newer systems run two at a time to reduce twist on the coach. The more you lift, the greater chance it'll try to fall. Never good, even less when you're working on a wheel! I have a four-way "truck" wrench from NAPA. It's long enough and stiff enough that I can work the Ford E-series lug nuts at the rated 140-ft-lbs.
I believe in doing an at-home, daylight, level ground test of all the lug nuts. Then I know I can work them even in sloppy conditions if I absolutely must.