It was probably the best thing that could've happened to me. If it's a good program, the staff will be quite understanding. Some may even be in recovery themselves.
The one I went to has been #1 rated in FL a few times. People come from all over the country. As long as you attend all of your sessions/classes for the day, you have your electronics (phone, laptop, etc.) from 4:30p-10:30p.