Hi everyone. Apologies if this is best placed in the BA forum, or if I’m missing something obvious.

I just wanted to check what check in and fast track security options there are at MIA for a BA gold / OW emerald flying business class with British Airways to LHR. I don't have TSA pre-check.

Am I able to use the flagship first check in?

I also understand that I’ll be able to access the flagship lounge, but not the first dining area.

many thanks all