The biggest benefit of public Wi-Fi is the cost. It is usually free with your campsite or a cup of coffee.
The downside of public Wi-Fi is reliability. It is often too weak for business uses, such as video calls
Mobile hotspots are fast and reliable anywhere campers have cell phone service.
Mobile hotspots are the best RV internet, but its not perfect. Data limits often restrict usage.
Satellite internet has more range than mobile hotspots. It works anywhere the sky is clear.
Satellite internet may be the future, but currently it is slow and super expensive.