With toddlers this young, you want somewhere they can actually *do* stuff without you white-knuckling the whole time. Cinnamon Shore wins here—it's a walkable community built explicitly for this age group, with multiple pools and a lazy river so you're not chasing a 2-year-old across sand. The private homes sleep 8-14, which means grandparents can tag along without hotel-room claustrophobia. If you want the resort infrastructure instead, JW Marriott Marco Island delivers the same toddler-friendly setup (calm beach, splash zones, water sports access) but with daily staff handling the chaos. Skip LEGOLAND unless your kids are closer to 4—it's a theme-park grind, not a relax-on-the-beach vibe.