Official tea time is 2 to 4:30, so I would think that 3:40 is a good time. Not sure how you can make it more special, but the GF bakery can take care of a special dessert if you'd like. They have mini wedding cakes, with the castle on top, Cinderella's slipper and many others. You could order your tea, maybe some finger sandwiches and then have the special dessert delivered. Arrangements can be made through 1900 Park Faire, just ask for the bakery department.
Tammi