Do I have to pay the subscription costs of satellite or in-reach to use GPSMAPs 66i?

I wanted to get the GPSMAPS 66i and the Fenix 6xPro as a combination to get into the mountains.  The more I read about it, the more it seems I have to pay a monthly subscription in order for the unit to work.  Is this true?  If I don't pay for additional subscriptions, will the 66i fix on my location, set up way points, track my movements, give me the weather, tell me the elevation, etc?  

thank you