Winter Vacation Packing

When it comes to packing, I have a bad habit of packing waaaay too much stuff. What can I say? I like options. The Boy and I are headed to Riviera Maya soon, and I’m trying super hard to limit my suitcase to the essentials: bikinis, flip flops, sneakers (for zip lining – not working out!), dresses, a tote bag, and a few good books. What are your vacation must-haves?