Daughter was invited over to daycare friends house—what’s the expectations there?

Maybe I’m overthinking this, but my daughter is 4.5 goes to a preschool/ daycare program. One of her school friends mom invited her over for a playdate at their house this weekend. I have met them a few times and I like them, but I am just confused on what are the expectations for a play date at an acquaintance’s house at this age. Am I expected to stay the whole time? Am I expect to just drop her off for two hours?