This would pertain to RVs, as the same problems I have seen in 30+ years of boat cruising.
We have had emergencies at marinas. 911 works. However, most campground/marinas have a list of 24 hour medical services available.
I asked a Doctor who was rated E R as to what can we pack to cover MINOR emergencies. He taught the group basic American Red cross "1st responder" first aid and recommended some meds to have on hand, and to ask your primary to script them for you.
I bought a first aid book at a boat store that deals with boat/marine emergencies, but mostly all of the items also apply yo R Ving.
For instance, you are at a campground at the ocean. In the water, you get a jelly fish stinger mechanism on your arm. How do you treat? Wash with SALT water then ammonia. (I have used this, it works.)
I built up a kit with what I need.
Many of us are older, and don't want to admit which anniversary of 39 you are in.
You have daily meds you take. Pack a few days extra, in case you run out or decide to stay longer. I use a medicine box set up in morning, day, and evening, and has a weeks worth. They are available at your corner drug store or amazon. It also has the advantage of looking it it immediately shows if you took a previous one or not.
This could save your life:
I had my primary make up a report stating my medical problems, allergies, meds, and historical problems, and print it. It is in my wallet and case I have a problem in Burning Stump, Missouri. (yes facetious) Nowadays, record it on your cell, and/or a USB memory thingy. EVEYONE has a computer.
Find out in advance if your major med/insurance has a call up line with a 24/7 nurse you can talk to about your problem. Note: I will not give medical advice or state what is in my kit, because we are all different. One thing I will say is: you are not trained and certified in sutures (stiches). Butterfly band aids are available over the counter and work temporarily until a major cut is professionally treated. Get an assortment.
Pets: the campground me be of help there. Or find another camper wo will at least feed the pet(s). $$$ talks.