You can stay as long as they're open.
Between the house, garage, grounds and visitors center you can make a day of it. If you enjoy classic cars, definitely see the garage. It is on the tour of the grounds.
No, not on the estate. You are close to Wilmington and there are multiple hotels near by.as I recall you can stay from open to close. They have tours at various times. It is best to arrive early. We missed some of them as they don't do tours during lunchtime. They have cars your boyfriend might be interested in seeing. We missed that. I would get the schedule before going. We didn't do that so we missed some things.
I do not believe that there are overnight accommodations on site. We stayed in Philadelphia and made a day trip to Nemours. Well worth it.
We enjoyed our stay at a nearby Hampton Inn. This was over the summer, and I remember it's on a 4-lane road a 20- minute or so drive from the estate.
I'll definitely take your advice and check them out! Thank you
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