Originally Posted by
corporate-wage-slave
That is open to Gold cardholders, as is T5 Arrivals, if travelling World Traveller. For T5 Arrivals, if you are HBO, over 18 years old, travelling with an EEA or Swiss biometric passport, then you best use the T3-T5 Flight Connections bus, use the e-gates at the UK Border and up to the Arrivals lounge once landside. You don't need a boarding pass for this. Otherwise for other passengers there probably isn't much in it to go landside at T3. The reason for this is that there are only 5 e-gates at T3, the old sort.
This is very helpful, thanks. I'm doing MIA-LHR in F next week and I'm still torn between T3 or T5, despite the logical choice (T3 AA). Non-EU passport here. All I'm really after is an English breakfast and a shower so, from my research, I should just use AA T3 Arrivals (which I've been to before...not super impressive but good for a quick pitstop).