Could anyone confirm if Silver can drop bags off any time on the same day as the flight? I'm Silver, travelling LHR -> HKG next week with two family members (one bronze, one blue) and, for various unavoidable reasons, we'll be at T5 at least 5 hours before departure. It's an awkward amount of time to have at our disposal so we're thinking that, if we can drop the bags early, we'll go airside and have a long lunch in one of the restaurants. If it helps, we're all on the same PNR, booked and paid for by me. Many thanks for your help.