I usually don’t send out their info until the day before they arrive. (I’ve also sometimes done it 2 days before).
I tell them we’re excited to have them as guests, give them their front door code, check-in time, and address. I explain that first thing they should do is turn the hot tub up, remind them that there is no smoking anywhere, remind them to adhere to the house rules (listed in the listing and in the binder on the desk in the house).
I tell them how many parking spaces the city allows at our property (3), and where they are, and that heavy snowfall or build-up can decrease parking by at least one spot. If I know there will be several cars in the party, I tell them about some free lots in town they can park in.
I also mention that we do our best to clear snow, but that sometimes they may have to shovel areas themselves—and that we provide a snow shovel.
If there are kids coming, I mention where the pack n play and high chair is, and that there are sleds they can use.
I tell them to have a wonderful time, ask if they have any questions, and then ask them to confirm that they got all the info (people rarely do—which frustrates me).
After this, they invariably ask for early check-in. Every. Single. Time. But that’s another thread for discussion!
https://community.withairbnb.com/t5/Help/Guests-coming-early/m-p/1243730#M269107