Everyone says go to diagon alley (studios side) first and get the whole “getting ready for hogwarts” experience. Gringotts gets extremely busy, so doing that early will save you a lot of time for the rest of your day.

If you want the most "cinematic" and immersive experience, you should head to Diagon Alley at Universal Studios Florida first. Entering through the "brick wall" in the London section provides the iconic "wow" moment of seeing the hidden wizarding world for the first time. From a strategy standpoint, many visitors start here to ride Harry Potter and the Escape from Gringotts before the midday crowds peak. However, if your primary goal is to ride the most popular attraction, you should go to Hogsmeade at Islands of Adventure first to join the virtual or standby queue for Hagrid’s Magical Creatures Motorbike Adventure, which often has the longest wait times in the entire resort. Regardless of where you start, you must have a "Park-to-Park" ticket to ride the Hogwarts Express train, which connects the two lands. Experiencing the train in both directions is highly recommended, as the "show" inside the train car is different depending on whether you are going toward London or toward Hogsmeade.