Yes, the 14:50 plug should still come with the charger. it's always the go to while traveling. A couple of apps to keep handy is RV Parky and ParkAdvisor.I've wondered if I should go ahead and invest in a NEMA 14-50 plug for my Tesla UMC. I hear RV parks are a great resource for charging in remote areas, too, and I think that is their standard.
Unfortunately, the extended family is already books at a different inn, but I may contact him to see if I can pay him for charging in an emergency. I do a lot of hiking in the mountains, and having an extra "last chance gas station" for my electric car would be nice.
Other things to keep in mind is keep the tires properly inflated. Run a little higher if you are loaded down but obviously stay in specs.
Speed really affects the range on the MY.