Nellie & Joe'sKey West Lime Juice, 16 Fl Oz Bottle

Ingredient says "key west" lime juice. their smaller glass bottles say "key lime" juice. is this regular non-key lime juice?

i see people think this is fake is this real key lime juice from the mexican grown little yellowish limes used in key lime pie?

Is nellie & joe's key west lime juice gluten free?

can I safely use best by 2019?