In our case if I can't handle it on the iPhone, then I'm just not disconnecting enough. And the DW gives me enough grief for just the phone usage.
There's several alternatives for getting internet access. You could only go to campgrounds that offer WiFi. You could go with HughesNet (or another) and access via Satellite. You could go with a cellular HotSpot, like Verizon's Jetpack.
But, if I really needed access I'd probably just tether through the phone. Most smartphones offer hotspot service, on 4G / LTE speeds, and are going to be almost as fast as home DSL service. Faster in some cases.
If you're in remote enough areas that you're not getting 4G, then the satellite option's probably the only thing that's going to give you decent speeds, provided you don't mind the inherit latency of satellite internet service.