Victoria,
Universal studios is great, visited it when I did Americas Golden West with JY a couple of years ago. We got 6 hours there and it wasn't enough there is so much to see.
The set where they did stunts from Waterworld was amazing, also special effects demos, bit of everything and a good few movie sets. The only roller coaster we did was Jurassic Park which was a good finish to the day, although got very wet. Will definately be doing Universal again.
LA traffic is horrendous if you plan visiting anywhere on your own, depends on location of hotel i would think.
Be good to meet you in the Three Magpies night before but if you have a change of heart book the Park Inn, its right over the road from the Pub. You can then go straight from the meal to bed rather than having to get to the other side of the airport and terminal 5 on your own.
We can travel over as a group in the morning, not bothering with breakfast in hotel, plan is in the airport after security.
Good you're another up for music night in Chicago, looks like could be a few of us which will be great.
Mick