07' Memorial Day Brides....

When are you having your Rehearsal Dinner? Did you tell your bridal party when to show up or did you ask them when they would all be available and then scheduled it for when everyone would be able to go? Please help me..I'm trying to decide if I should do it the Friday before. I figure I'll have everyone meet at the church at like 6pm and then be back at my house for dinner at like 7:00pm - 7:30pm..Is that to late?