We have a share! But we did come into an established share that had been going for like 20 years in our neighborhood, so everything was pretty set.
We have 4 kids, which is on the high side, but is what our nanny prefers. And it's nice to have that interaction.
Nanny gets 2 weeks vacation per year plus all holidays. She lets us know vaca days well in advance. She also has sick days as needed but very rarely takes them.
Families take vacation whenever they want but continue to pay nanny while gone (basically pay her every week of he year whether she's out our we're out). Sometimes we've also been successful at planning concurrent vacations.
Our nanny doesn't drive the kids anywhere or take them to paid activities so no comment there. They mostly play at home, walk around the neighborhood, and go to the playground down the street (where they frequently meet up with her nanny friend and her kids)