My answer is basically the same as the above. They have day passes for everything including the water park so you don't actually have to stay at the resort. I would call the resort or do online chat to confirm what they have or don't have related to passes that would allow you to use the arcade. The way the arcade is run though I wouldn't be surprised if you couldn't just walk in the front door and go down to the arcade. They have machines in which you can purchase cards to use in the arcade. you probably wouldn't even have to talk to anyone at the front desk to enjoy the arcade the escape rooms and the other games there.
No not at all they have day passes that allows you excess to everything but the arcade part is a additional cost
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