We are connecting on our upcoming southwest flights, which is not my preferred but I was able to book with low points during our spring break, so Ill take it for free 
Anyway, we have the early boarding for everyone, but I am a little more concerned about boarding the 2nd time for our connecting flights. We have plenty of time between the flights. Im guessing there is no way to tell how full the flight will be before we board?
I would like all 4 of us to sit together, but if not, either one row with 1 adult and both kids OR 2 spots with 2 and 2. We are connecting at BWI. Im more worried about our too Orlando flight as its a saturday. I did some research and its originating in Portland, ME. The flight is sold out if you want to fly on it from Portland to Orlando- but each leg is not sold out alone (ie: if you want to go from Portland to BWI its fine.
I know the last time we flew southwest I stressed about this too (for nothing). Any past experiences with connecting? Should I be worried?

Anyway, we have the early boarding for everyone, but I am a little more concerned about boarding the 2nd time for our connecting flights. We have plenty of time between the flights. Im guessing there is no way to tell how full the flight will be before we board?
I would like all 4 of us to sit together, but if not, either one row with 1 adult and both kids OR 2 spots with 2 and 2. We are connecting at BWI. Im more worried about our too Orlando flight as its a saturday. I did some research and its originating in Portland, ME. The flight is sold out if you want to fly on it from Portland to Orlando- but each leg is not sold out alone (ie: if you want to go from Portland to BWI its fine.
I know the last time we flew southwest I stressed about this too (for nothing). Any past experiences with connecting? Should I be worried?