In my case, what I have is an Evdo card, which is suppose to connecto up to 2.4, but normally connect at 256 to 512, which is good enough for portability.
My contract is unlimited access, I called Verizon here in Puerto Rico, and they told that they only activate the national service if the client ask for it, it is at no cost. I will be at Orlando on october 23 for a training on Jacksonville, so as soon I arrive to Orlando area, I will visit the track and make the test, if there any problem or no, I'll let you know.
BTW I hope we can meet in person, I have read your reports before.
Well sorry about my english if I misspelled something wrong, English is my second language.