I am also not a huge fan of strictly given packages as things tend to change sometimes and I need to stay flexible to fulfill my client's wishes. All the packages (especially the timings) are orientative so I just shoot until it's needed and wanted. Never leave before the first dance just because the schedule is running late. It´s all up to the induvidual agreement with the couple.
I also love to deliver the photos ASAP as I know how frustrating it can be to wait for your pictures when you are so curious and the pictures just create the full puzzle image of memories of your day. You just can't be everywhere and there´s been so much fun things going on you don´t wanna miss!