I'm in Miami now and can confirm that the boards behind the BA desk said Check In starts at 2pm BUT it was 1315 when I asked if I could check in for the later 10pm flight and they were already checking people in. BA staff said 6pm for the BA208 but then I overheard two staff members talking and they said 530pm - will update later what happens.

EOA - I joined the queue at 5.05pm and there were already about 4 groups of people in front of me (one family of 3 who had enough suitcases to fill the aircraft on their own, They caused absolute chaos at both the First and club desks and ended up being asked to move to one side. The station manager stood at the front of the Club desk and shouted to ask if everyone in the queue was in Club - which they were. He then pointedly said that check in didn't open until 3 hours before but as they had baggage belt problems earlier in the day 4 of his agents would be checking people in. I was through security with TSA Pre and into the lounge by 1733. It was all very confusing,

The lounge is a huge improvement on the old one but sadly some of the clientele leave a lot to be desired and sadly no Prickly Margaritas as they had run out of syrup. The staff are really lovely and very proud to be working in "thheir" lounge.