Babysitter Needed for my Children - Full-time / Part-time

We need a babysitter for children in Harbor Springs. We will be visiting for a family vacation and the adults would like a day to go to the wineries without the kids. The older two are pretty self-sufficient and are good about helping with the younger three, all of them are cousins. We don't know exactly which day because we aren't sure who might be available and when.