You cannot just go into the harvest thinking it's going to be easy, you'll be mistaken.  There are long hours and long days, but also you may get a break or two along the way.  Enjoy the run, get along with everyone and it will make things easier.  If everyone gets along the run is a lot more enjoyable and things seem to go a lot better.  Expect to work hard, but also to play hard when the time allows.  Those rainy days are great for catching up on sleep, checking e-mails, and sitting back and relaxing or doing laundry as the need arises.  It will be stressful at times and a lot will be expected of you.  It's just a part of the harvest.