It isn't that hard to ship chocolate to warm weather places as long as you KNOW it will be delivered when it should be. (I worked for a custom candy packaging company for 12 years and we shipped EVERYTHING everywhere all year long.)
As long as the chocolates are packed in coolers with dry ice or ice packs and are sent on a Monday, Tuesday or Wednesday via 2 day service the candy survives nicely. Once it sits someplace non temperature regulated over the weekend or is held up in customs all bets are off and problems start to arise.
DM