Planning a baby shower on Long Island involves more decisions than most hosts expect, and the rental side of the equation is where things tend to get underestimated fastest. Whether you are hosting 20 guests in a backyard or 70 in a rented hall, knowing exactly what you need and in what quantities before you book is what separates a smooth event from a stressful one. This guide breaks down linen rental on Long Island and every other rental category by guest count, walks through the honest cost difference between a backyard setup and a venue booking, and covers the 2026 aesthetic trends worth building your rental selections around.