When I received my first 200 hour yoga certification, it was done classically. It was thought of as a full time commitment. I was expected to attend 5-6 days a week for 8 hours a day. Additionally I had to be vetted for the training, commit to extracurriculars for the training, study and pass exams. In other words, it was almost impossible to do anything other than training. I was immersed in the study of something I loved and wanted to learn. The effect was transformative; a whole new world was opened and a new life and path was forged. 

You’ve finally committed to going on a yoga retreat…..now what!? Ideally you are not going in blind. You will get lots more out of you retreat if you are familiar with your guides/teachers. Go practice with your teacher regularly. This will deepen your connection with them, facilitate instructions during practice, and set your expectations properly.