Can I jump in here and ask for a point of clarification? When this topic comes up it seems everyone talks about cell booster and wifi booster and I think the wifi booster gets only one aspect of it covered. The aspect everyone talks about is the ability to "boost" an existing wifi signal (aka the campgrounds wifi). However, my understanding is that the "wifi booster" is actually the Cradlepoint Wireless WAN which is much more then just connecting to the campgrounds wifi. True, it can connect to the campground wifi boosting it and then using the connected router to seamlessly provide an internet connection to all your devices. However, for me the real power comes in the ability to use the same cradle point WAN endpoint to pull connections from wireless networks (AT&T, Verizon, etc). It is unclear in the Ollies add-on package what type of Cradlepoint router comes with the install. I think this is where most people's comments of "using our phones as a hot spot" comes in. True, they play the same role assuming your phone can get a strong connection inside your Ollie. If it cannot people have mentioned this is where they just connect a MiMo antenna attached to the window to something like their Jetpack. Our Technomadia friends have a great run down on all this. This works as well.
However, my understanding of where the Cradlepoint Wireless WAN can be really powerful is 1) The omni-directional antenna mounted on the outside of the Ollie allowing for strong cell reception (less interference and stronger antenna then your cell phone alone). 2) The ability to have dual sims with cradlepoint so it can stream your connection through whatever provider has the strongest connection and doing all this without requiring you to change the Wifi endpoint your device(s) are connected to.
Am I over stating what that add-on provides? Like I said their specs are not clear on what the actual hardware is that comes with that add-on so not clear if it is the version that allows dual SIMs. Even with a single SIM though the idea of an externally mounted strong omni-directional antenna for a cell single connection is a win over just using your cell phone. Good thread here. I think there are fair arguments about the cost versus waiting for something like Starlink to be viable or the complexity of this for the avg. person or the subscription cost. All fair topics. But I think talking about the "wifi booster" as just a way to "boost" the campground wifi is really understating what it is.