We board the first three rows first........ one reason....... Um's/ Parents with Children......Parents who act like children... Assent/Summit members and other reasons ...... ITs nice to start with rows 1-5 with all specials...... One reason bin space, the other for certain people needing extra time down the jet bridge.......yada.yada.yada.

Also for the Bin space....... Its a big problem, alot of pax like to stow there overhead bags in the overhead bins(rows 1-5) and then its a pain.....

But anyhow......its all up to the FA(A postion) and the GAte Agent.......However most Gate agents are chomping at the bits to board. Anyhow........

Hope it helps.
-FRNTbOY