Still PG but expecting to go any day now so these are still somewhat tentative but...
I did type up general info for my parents while they're staying with DD - bedtime routine, where things are (like her clothes and shoes and feeding stuff), instructions for cloth diapers if they want to use them instead of sposies, medicine dosing in case that's needed, info on our cat, that sort of thing.
We're planning to have her visit in the hospital. DH wouldn't have it any other way and I know I'll miss her some too.
We don't live far from the hospital so DH will most likely go home at some point but I've asked that he stay the night with me. It was a huge help last time and it also seemed like great bonding time for him and DD.
The only other "tips" I can think of right now is that I got easy-to-prepare meals for DD so the grandparents have it easier (the Gerber toddler microwave meals) and I specifically set aside the outfit that I want her to wear to the hospital - a special big sister shirt - so it's easy to find.