said by allquixotic:
If you have a grandfathered unlimited LTE data plan and do NOT have the tethering/hotspot feature on your account, is it possible to have them add the tethering/hotspot (for an additional monthly fee, I know) without forcing your account to a limited (shared) data plan?
If the answer to the above is yes, will the data traveling through the hotspot be capped or is it also unlimited?
No is the short answer.
You have to switch to the shared plan to get free hotspot functionality.
I think if you add the hot spot functionality for $30/mo now, you'll get a 2GB plan.