Hi everyone, very long time lurker here! My husband and I are travelling to Atlanta from Heathrow in October in first. Some friends of ours are also travelling with BA that day to Miami. We would love to be able to take them into the concorde room so they can experience it, but their flight leaves at 10:40 am whereas ours is a late afternoon (around 4 pm) flight. We always planned on getting to the lounge by midday so we could have lunch and a spa treatment etc but we are happy to get there extra early so our friends can go the lounge. Just not sure we would be able to check in for our flight 12 hours before? Also are we allowed in the ccr that early? If we are allowed to we will probably book a cabana so we can chill out / sleep off the champagne in there for a few hours and we don't mind being stuck airside for an extra 4 hours.