Good morning,
Let me start by saying, my background for the last ~20 years has been in I.T. (network architecture). Walked away last Nov. and now doing marine canvas and upholstery (lol, bit of a change!!!)
Hotspots were not intended to be used 24/7 but more of an adhoc type of service. They also don't have the best internal antennas. Basically designed for you to be within ~10' or less of the device...
Until about a year ago, I was also using one of the Tmobile hotspots (100G data limit). Had that also paired with my work demo equipment. AT&T 4G (unlimited data) using a CradlePoint device. Both of those then went to a VeloCloud SD-WAN appliance for QoS, load balancing, failover. Being in the Puget Sound area, there was pretty much no where that I went that didn't have service. Last year, I tested one of the Tmobile "Home Internet" devices. $0 equipment costs, no contracts were pretty appealing!!! BUT, the biggest bonus was that it was TRULEY unlimited!!! They say that you "can't move it from registered home/service address". But that's total B.S.!!! I have used it from Tacoma to Succia Island. Tmobile in the San Juans can't be beat. A bunch of Tmobile execs all have properties up there, so the area is lit with 5G almost everywhere!
There's a few links you can also check out where you can "hack" the device and add external antenna capability. South sound, not really needed. Up in the San Juans, you can definitely tell a difference in some of the more remote areas...
If you plan to go to Canada, Starlink is the way to go. Tmobile home, basically stops working when you cross the border... Doing both would be a great setup and you could pause SL when not in Canada...
Peplink makes a few devices you can use to bond connections together that are pretty slick...
I leave mine on and connected on the boat 24/7 so I can see ships data any time. I also have a Reolink PTZ camera connected to a solar panel that I can stream any time I want, which is nice if I want to check on things at the marina...
Bottom line, $50 per month for the "Home Internet" version is the best investment you can make for onboard internet and wifi. FYI, the wifi from the device is decently strong. I can still be on my network in the parking lot of the marina, ~50 yards away...
Any questions, feel free to ping me!