My setup is similar to daleyocum's. I have ATT via iphone 7 on daughter's business plan. iPhone 7 can be setup as a hotspot, but I would quickly run out of data, which affects the other users as well, and it gets very expensive when exceeding the plan's very small limit, 15GB, I think. So, for data I rely on the now unavailable unlimited $80 (of $75 autopay) Verizon plan using a less attractive Eclipse MHS900L. So, my data is unlimited in the sense that there is no cap and its not throttled at all, but always network managed.
It recently was taken off the table by Verizon, but as long I don't let it lapse (or miss a payment by even one day) it is grandfathered in.
It is possible, when WiFi calling is turned on, to make a calls over this Jetpack, or any available WiFi network that allows it. I cannot receive calls via the associated number on this plan.
I stream Prime and Netflix content with a Fire Stick, but am contemplating just using an iPad when traveling. It would normally just be me. A nice clip / holder / mount would make that work.
Is taking it all with you, really getting away from it all?