Any advantage to entering the SC with an Int'l C BP instead of an Amex Plat?
There is no difference in how you enter/what you get - except I think ATL F and JFK 4 (maybe). For a moment (and maybe still happening, I don't know), pre INTL Departures got a light "bistro" meal or something. Nothing special and I'm not even sure if that is still an ongoing thing.