FYI I just booked a hotel for 7/7-10 and the fine print on Early Entry has changed, and not for the better.
As of 2 days ago, the website said:
"†Early Park Admission begins one (1) hour prior to regular scheduled park opening to one (1) Universal Orlando theme park as determined by Universal Orlando. Valid at select attractions at each park. Universal Orlando Resort reserves the right to open alternative attractions in the event that a technical problem arises or an attraction opening is delayed."
As of today, it now says:
"†Paid theme park admission required. Early Park Admission begins one (1) hour prior to Universal’s Islands of Adventure regular scheduled park opening for on-site hotel guests and is valid 7 days a week for travel through 12/31/14; valid only at select Islands of Adventure attractions: Harry Potter and the Forbidden Journey™, Flight of the Hippogriff™, Dragon Challenge™ and Caro-Seuss-el™. "
The hotel reps I talked to have no idea what will actually happen, they have no clue which guests get into which park on what day, and won't until after 7/8. All they can say is "all benefits are subject to change."