Peppers grow great in Naples!
If you want a vegetable that's easy to grow in SWFLA...
We have hot peppers, bell peppers (green, yellow, red and orange) and they all grow - all year round!
Tomatoes are a pain, but just pick up a pepper plant at Home Depot, Lowe's, your local garden center (Golden Gate Nursery is my favorite), stick it in the ground, water it every day, and it will GROW!
We have pepper plants that are two years old now. They look terrible but they keep producing peppers!