Your vacation is coming right up around the corner! You must be so excited!
When you arrive at Disney's Caribbean Beach Resort, you can actually check in early even though your room will more-than-likely not be ready until 3:00 p.m. You'll be able to leave a cell phone number to receive a text message when your room becomes available. Let the front desk Cast Member know that you are going to leave your bags with the bellhop and that you'd like to go visit the Parks right away. They should be able to give you your Park tickets at that point, you may even receive MagicBands as room keys like our family did last weekend! You'll then be able to head straight out to the Parks and won't have a problem for Extra Magic Hours since you'll be all checked in.
Thanks for stopping by with your question, Ilene! Please let us know if we can help with any others!