Don't cut them, wait until you get back. If you cut them, then you open the eggs to problems with bacteria (warm moist environment) and you will not be home to handle any potential problems. If you can fit it, place a small water bowl in the egg box. That way, when they come out of the egg, they can get a drink. Many people leave babies in the incubator until after the first shed. So, you should be fine.

BTW, Congratulations on your marriage.