Disney's Polynesian Village Resort and LEGOLAND California Hotel are the obvious fast-track picks here—zero friction getting toddlers into the parks, zero energy wasted on logistics. But if you want to actually slow down and let your 2-, 3-, and 4-year-olds breathe, the other three swing differently. Martinhal in Portugal is built obsessively for this exact age range with dedicated clubs, so parents get actual downtime. The Cloister and Averill's skew toward all-inclusive structure—one's beachfront luxury, one's a dude ranch—both designed so you're not chasing activities all week. Pick based on whether you want theme-park efficiency or family-pace breathing room.