I recommend getting the express pass. For 2 parks unlimited rides one day pass add another 100 bucks.
2 park 2 day is around $200. You can visit one park per day (universal studios & island of adventure). Volcano bay has only water rides i think you skip that if you are on tight budget. 3D/4D shows is what universal studio is famous for and you can enjoy that in the other two parks.
Lots of discounts, tickets at work, etc. Recommend you look at 4 day, 3 parks ticket package, 3 days at universal studios and islands of adventure and one volcano bay
You need at least $125.00 for a single day entrance. If this is your first time visit I highly recommed just one park per day!
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