Ultra - Local and Remote Live Streaming

[Moxilla]

I used to have the Iris security system, which has gone the way of the dinosaurs, so I'm shopping for a replacement and considering the Ultra or Pro2.  There are many more features, and I'm not sure I understand if the "Local and Remote Live Streaming" feature will need a subscription after the first year with the Ultra system.

I have some questions about the different options to view live video, explained on Arlo's web page: "How do I stream in 4K with my Arlo Ultra camera?"

https://kb.arlo.com/000062127/How-do-I-stream-in-4K-with-my-Arlo-Ultra-camera

The 1st option to "view live video in 4K from Arlo Ultra" :
" • Your mobile device is connected to the same *local network* as your Arlo SmartHub or base station. This lets you live stream 4K content."
(The Ultra User Manual says the same thing on page 17.)

Q1 : I'm reading this to mean my mobile device is connected to my router (like a hotspot), and I use the app to view live video. Correct?

I understand the 2nd option, using a microSD card.

The 3rd option:
" • You subscribed to the Arlo Premier Video add-on service to store motion recordings in 4K quality to the Arlo Cloud to access wherever you have a mobile date connection."

Q2 : Is the 3rd option the only way to view "live" video remotely?

Q3 : Is it possible to live stream remotely in 1080p without a subscription?
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I found this page:
https://kb.arlo.com/000062162/What-options-will-I-have-when-the-Arlo-Smart-Premier-1-year-service-pl...
"Without a service plan, your Arlo Ultra camera will continue to have the following feature...
• Remote and local live streaming
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I like the microSD card recording feature of the Ultra, but trying to decide if it's worth the investment over the Pro2.

Thanks.