[Alucard]

Try to seat the grumpies first and business women last so, all the orders come one after the other.
Try to seat all tables.

After that it is the same old stuff. Combos, seating bonuses, and try not to let anyone leave.

I got the expert score on lvl 3-1 on my first try just now.

Just remember that it really doesn't matter if you wait a long time and the customer's hearts are down to one. What matters is if they leave or not. You can always get your combos in.