If the Wx is Tempo below CAT I mins, we at SWA (largest US Domestic Carrier), have additional alternate fuel.
That's fascinating Mick.
SWA does not fly any international routes, nor does it seem capable of successfully completing ETOPS certification. No, San Juan is not another country, despite what your flight ops managers think. The airline that flies your international routes for you has nicknamed "SWA (largest US Domestic airline)", 'The Flat Earth Society'.
Carry on.