Is there a penalty/downside to quit one Party for another? I got a message saying I would be charged $40 if I left my Party. I assumed they meant I would be charged $40 if I didn't join another Party. Correct?
Yes, that is correct. Party pay is a benefit of the service. They have opened up parties now that you can have more than four. We originally had four Visible subscribers in my family, but now three have bolted for Mint Mobile after the Google Fi issue that lasted about a month. I joined another party with 2000+ members to keep my line cost down.