Orlando is out of Gatwick I believe?
The exact config of the various desks does seem to vary slightly each time I go. However I am pretty sure the last time I was there a month or so ago there was a one queue for First/Gold and one for Business/Silver/Bronze.
Then there is the self drop and regular staffed check in.
To be honest all the queues were flowing well and self drop had next to no queue.
In terms of boarding you will have a boarding group printed on your boarding class, which reflects your bronze status, as will anyone on the same reservation. I think it will be group 3. Groups boarding at Gatwick works better at some gates than others.
Don’t forget you select seats for free 7 days before and to recheck 3 days before as some blocked seats may then be available.