This is still a great time to go to the states due to the low value of the american dollar. One of my most favourite and romantic places is little palm island. You'd fly to Miami, drive into the keys, then a private yacht would pick you up and take you to the private island.
It's even better because August is low season in Florida, so there are very few people there. The white sand is endless and your private bunglaows make it a truly memorable escape!
http://www.littlepalmisland.com/littlepalmisla nd_home.aspx
bon journey!