Perks are as follows:
If you complete an AM shift, you gain admission after your shift THE SAME DAY
If you complete a PM shift, you gain admission before your shift THE SAME DAY.
If you complete a SAT ALL DAY shift, you gain admission all day on SUN.
If you sign up for a SUN ALL DAY shift, you will be granted admission all day on SAT. Because you will be receiving a full day's admission prior to completing your shift, you will be required to leave a credit card number which will only be charged if you do not complete your ALL DAY SUN shift.