I honestly don't think it matters (though I could be wrong). Most CSR's don't seem to know when promos come or go.Yes, I would be getting the XL (16GB) plan. Did I need to change the plan prior to pre-ordering the phones? What's the timeline for changing to The Verizon Plan in order to get the 2GB bonus data on each of the lines I upgraded? I keep getting different answers from customer service.
Probably sooner than later, but I'd guess the next couple of weeks are safe.