Transportation should be reserved as early as possible. GBTA Convention brings high demand across Chicago hotels, convention venues, airport arrivals, hosted events, and executive meetings, which can tighten vehicle availability as the event approaches. Executive SUVs, Sprinter vans, and larger group vehicles are especially important to secure early when the program involves multiple arrivals, off-site movement, or convention-wide scheduling. Advance planning also makes it easier to align manifests, billing, and event timing before the city gets busier.