Ok first up i would say take loads of undies and make sure you well prepared on the maternity pad front (not to scare you but i went to sleep for 3 hours and woke up and it had leaked through everything including my pj pants)
Other than that take everything you normally would if you were going away for a couple of days, better to be over prepared than underprepared. I'm sure if your DH/P is anything like mine he wont know whats what if you send him home for something. lol