Hi Gwenyth, Everyone's favorite adventure will vary from person to person. It just depends what your tastes are! (That said, you can't go wrong with doing all of them - it's much cheaper and the admissions never expire so you can do them across as many different days as you want!)
The costs are $20 for 1, $25 for 2, $30 for all 4. Definitely get the 4 pack; it's the best value.
Based on cost... I would suggest doing all of them. You don't need to do all in same day. It's like $18 for 1 or $25 for 3
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