FLL reserve has gone pretty junior lately.
Reserve callout is based on time flown and reserve days remaining. Seniority counts as a tie breaker.
There is plenty of open time. Count on flying often.
Other bases differ.
In LAS, folks are calling in to request flying...
There are some excellent day trips at FLL that go very senior.
Overall, for non commuters, it seems that ACY has the best schedules. (?)