Hi Josefina,
How exciting, your trip is just around the corner!!!!
You are able to bring in snacks to the park but you are not able to bring in a cooler with wheels.
The measurements for the bag without wheels must be under 24"(long) x 15" (wide) x 18" (high)
HERE is a link with more information on what is allowed into the parks.
Also, glass containers and alcohol is not permitted into the parks.
Make sure you pack some healthy snacks, to keep your energy up all day!
Thank you for your question.
Have a fantastic vacation!!
Carrie