Does anyone have travel tips for Universal in Orlando, FL?

snickernikki727 asked:

We are planning on going to Universal Sept 6-12. park passes are included with the hotel stay- so you can visit any of the 2 parks for 7 consecutive days – free (no need to buy the 2 days/ 5 free)! Total price with roundtrip air from Midway, 6 nights at the Universal Royal Pacific Resort (standard room), Alamo (midsize) car rental, and 7 day park passes at Universal for two passengers (1 adult, 1 child) $1712.07
Same package above for 2 adults, 1 child $1885.27
I have never taken a trip like this before. Does this sound like a good deal? We were also thinking about hitting Disney for a day. What park would be ideal for myself and a 9yr old? How much spending money is a resonable (realistic) amount? What kinds of things shouldn’t we miss?