I think most of it is already answered in this thread.
Yes there is a fixed pattern and you can get on it after 1 year, 9n5 and as captbod says, unlikely to get in EMA.
For the command as already mentioned, 2 years and all the boxes ticked, at the moment around 3 years, but I guess it might be more in the next years.
Everything is seniority based, but not only on seniority.
The 777 should be here in 2021/22 taking over the A330 flights.
