It does not cost any extra since your a resort guest, and i would ask at the front desk about early entry days
Here is a link to a site that lists all the park hours for March, including which days are early entry or evening extra magic hours.
Just read it carefully, because the titles on the left may not line up with the hours in some web browsers. Thanks to JamesD for giving me this info!
Extra Magic Hours do not cost any extra - they are a free perk to guests staying at Disney on-property resorts.
You will have to show your resort ID to get in to a morning extra magic hour, and you will need to pick up a wristband by showing your resort ID to stay in the park for the evening extra magic hours. There should be special locations throughout the park for getting the wristbands. When you check in, you will get your resort ID and more information on the extra magic hours.
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