Just called (800) 543-3622. Took less than 5 minutes to get signed up for the Verizon Mifi unlimited plan. My MiFi unit will be sent out June 20th.
Good news..."monthly price has been lowered to $43.99 to attract more members"
I learned about it here: https://www.rvmobileinternet.com/fmca-rolls-out-unlimited-verizon-hotspot-plan/