A bag of wilted lettuce is both a blessing and a curse. The blessing: It’s an excuse for some of us bad kids to avoid eating our vegetables. The curse: Hard-earned money has officially gone down the drain, as well as the nutritional benefits. Plus, salads aren’t so bad if you know how to keep them interesting>I recently stayed at Nantipa — A Tico Beach Experience resort in Costa Rica and was wowed by the freshness of its produce. From ceviches and guacamole to watermelon salads and veggie dips, the food…