One small point of clarification. The Apple Watch can use either LTE or a know Wi-Fi connection to communicate with the paired iPhone when out of Bluetooth range. For example, I use the current free Xfinity Wi-Fi in one specific area where I have no Cell coverage.
Dave
Yes - I was thinking in context of being out on a run, where there is no wifi available, but was not clear about that.
I also believe the known wifi must not have a click-thru / TOS page else the watch won't work - but I may be misremembering.