Satellite in my eyes

I'm considering upgrading from my Pixel 9a to a 10 or 10 pro. Main reason is for satellite connectivity.

I'm perfectly content with my 9a still. It's only a year old and fits my needs fine.

However I have a 10 day backpacking trip in a remote area this summer, and thought this might be a valuable upgrade. (Obvs the battery won't last that long. I would start with a full battery and leave it off unless needed.)

I'm ok with the cost, but didn't want to upgrade my 9a if the feature I'm interested in is still half baked.

So looking for input or feedback from anyone who has used the satellite features. Did it work ok?

Also what support for this does Google Fi give for unlimited premium? Is it still only emergency texts?

Thanks!