Well, for #2 I was booked in to be induced so no surprise on the day, but I went into labour at 3am.

Realise "oh heck, she's coming early" and engage panic mode.
Have breakfast, get dressed, last minute packing, ring hospital, go to hospital (got there at about 5am), have baby.

No induction!

This time its going to depend heavily on what time of day it is and what the kids are up to. If its not in the middle of the night, first thing I do is ring my parents so they have as much time as possible to get here to look after the kiddlywinks.