Travel expert Gareth Llewellyn advises against last-minute boarding due to limited overhead space and seat changes.

Travel expert Gareth Llewellyn warns against boarding planes last, citing two main reasons: limited overhead space and seat changes. He advises choosing a seat at booking and packing strategically to avoid gate checking in carry-on luggage when space is limited. TikTok hacks suggesting last-minute boarding for more space may be impractical, as passengers may miss important announcements and have difficulty finding overhead locker space.