Cocktail attire, please.
Curtis Arboretum is very near our house in Elkins Park, which is just past the northern city limits (where Broad Street ends).
To get to the venue from downtown Philadelphia, it can be anywhere from 30-60 minutes of (sometimes intense) driving, depending on your exact location. There are many hotels/Airbnbs near the central part of the city, but because of the substantial drive through crazy city traffic, staying in the downtown area may not be for you. If that's the case, we recommend staying at a hotel/Airbnb somewhere north of the venue. For example, there are many hotels in Willow Grove/Horsham and Fort Washington.