Not a cheap location but friendly and safe. You can check on line to view how crowded they expect it to be on a given date.
Sesame street place is great for the short ones. My grands love it. It is pricey.
It will be an unforgettable birthday
It has a section of park designed for children of that age. It's like 25% of the park so is adequate. The rest won't be easily accessible to them but they can still go sight seeing supervised. Be wary, prices will be high for anything food or drink related during the birthday event. Water and soda is $5, with four chicken tenders and fries at $13 for the basic stuff as an example. Keep that in consideration
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