We spent the entire day at Universal, and almost the entire time in one of the two worlds of Harry Potter, and it was amazing. AMAZING.
We started out in the newer of the two parks - Diagon Alley - and i was almost immediately overwhelmed with how incredible everything was. They did SUCH a good job of making everything PERFECT. It's a testament to how good of a job they did that someone who knows the books really, really well can walk around all day and not come across anything that i thought, "Hm. Well, that's not right." There were all of the things from the movies, but then there were details that people wouldn't even know if they'd only seen the movies. It was so happy-making. And everyone who worked there seemed to be really happy.
We rode the Escape from Gringotts ride, and it was fantastic. It was the first thing we did, and i'm guessing that every other ride will pale in comparison. We walked through all of the shops and looked at every detail and i took 745 pictures in the course of the day, many of them little details. Keren got a butterbeer, which she let us try. Beth got an ice cream cone from Florean Fortescue's Ice Cream Parlor (where Harry used to sit every day to do his homework, while Florean would bring him free ice cream every hour before third year). We ate at the Three Broomsticks. (Beth and i shared fish and chips, and they were delicious!) We rode the Hogwarts Express - twice. Keren bought an interactive wand, so she walked around finding the little places to do magic and making things move and sing and do random things.
My pants completely ripped right in the butt about an hour after we got there (apparently that's another good reason not to wear old clothes?), so i spent the entire day trying to hide my butt with my purse. Keren and Beth insist that i did an admirable job and nobody could tell...except when we couldn't take our bags onto a ride with us, and then i just ... flashed my underwear at everyone, i guess. It was...not ideal. On the bright side, it was my butt, so at least it didn't show up in pictures!