Update: I finally got to speak to someone from Verizon who at least could help somewhat once I told them the Plan ID 11454. However, this plan applies to one line only. I already have 3 lines (two smart phones and a MIFI jetpack). So, if I took advantage of the FMCA plan for one line only, then I would still have to pay for another data plan for my other two lines. There goes any supposed savings right down the drain.
Based upon my experience, I think that Technomadia's verdict of "Nice Try" overstated the value and usefulness of this plan. This is the second time I have been "fooled" by FMCA/Verzion collaboration (signed up last summer for the DOA plan). The first fiasco cost me only time. This fiasco cost me too much time and actual cash as I had to sign up for 2 additional membership years in order to qualify for the plan.
Bottom line: If you want "unlimited data" that is actually limited on just one line, this is probably a good plan for you. Otherwise, not so much.