I have combed through a bunch of threads but am still not sure our particular plan will work for Heathrow. Can anyone give a little feedback on the following logistics??
We are AA Admirals Club Members. We have a 12 hour layover on our flight from DFW through LHR to JNB and wanted to do the following:
1. Upon arrival from DFW go to AA Lounge in T3 to drop bags, eat, etc.
2. Go into London for a few hours. I realize the logistics of this all but we have time.
3. Return back to T3 AA lounge for showers, dinner etc.
4. Go to T5 for 7pm flight to JNB.
I think if I understand responses to other threads that upon arrival we go to the UK immigration and then back into the AA lounge at T3. I am just wondering that if we leave the lounge and go into London when we return will we be allowed into T3 (even though our departing flight/boarding pass is out of T5 on BA) to go back into the AA lounge before departing to T5?
Any thoughts? I sure appreciate any feedback.