http://www.farmigo.com/account/SYSTEM URL/SEASON NAME#Tab=Vacation
If you are unsure of your System URL or Season Name, you can find them by looking at your sign up link:
http://www.farmigo.com/join/oldmacfarmseasonal/summer-fall2013
PLEASE NOTE: If you are a seasonal farm, you will need to update this link regularly in order to direct members to the appropriate link.