I don’t know about the Apple Watch Series 9, but I’m currently using the Apple Watch Ultra and I really feel that signing up for LTE is worth it. 99% of the time I never have to use the LTE feature, but the remaining 1% is very valuable and necessary. There was a time when I went to work and forgot my phone at home, and that day I completely relied on the LTE feature of the watch to receive calls and notifications. However, I think you should also consider a bit, because my Apple Watch Ultra has a very good battery, so using LTE does not affect much, while the Apple Watch Series 9 version may not be able to use LTE as long.
I don’t know about the Apple Watch Series 9, but I’m currently using the Apple Watch Ultra and I really feel that signing up for LTE is worth it. 99% of the time I never have to use the LTE feature, but the remaining 1% is very valuable and necessary. There was a time when I went to work and forgot my phone at home, and that day I completely relied on the LTE feature of the watch to receive calls and notifications. However, I think you should also consider a bit, because my Apple Watch Ultra has a very good battery, so using LTE does not affect much, while the Apple Watch Series 9 version may not be able to use LTE as long.