There are vacancy awards every 3 months now (4 per year) and most seats in LGA and MIA are pretty easy to hold. Anyone should be able to hold MIA or LGA 737/320 on their first vacancy bid, which will likely be effective before you even finish training.

There is a large vacancy bid that should be awarded in the next 2 weeks, which is why things are strange right now. Was like this last summer before and after the big vacancy award as well. Lots of CLT and PHX, not much LGA and MIA.