You do have some options. Check with your cell provider about a hotspot. That would be a stand alone cell line, but it would give you data with wifi from the hotspot. Also if it a major need, check out the Mobile Internet Resource Center and Mobilemusthave.com We installed a Pepwave router which has 5g and works with 2 sims (we use T-Mobile and Verizon).

Another place to check is FMCA.com. Members have access to a program that has a hotspot. Also has a number of other benefits for members (FMCA assist which can get you, family and rig home if you have an emergency). Send me a PM if you want more information.