Unfortunately it is not very economical, but in 4 days you can visit all the parks. I hope you have a great time!
Cheap in Orlando does not exist. Any snack in the park for 4 people costs 30 to 40 dollars. Or 90 to 120 reais. Any souvenir, t-shirt, cap, etc. costs on average $ 30. The 2 parks you mentioned are very good, in the animal jib in the avatar ride, queues of 2 to 3 hours, because it is the best.
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