We are DL vets but this year we want to try Universal studios for a couple of days.  I have not been since I was a kid in the mid 80s so I basically know nothing about how it works.  What are the musts for me to know with my family of 4 (Myself, Wife, MIL, and daughter 9).  We found discounted tickets for the dates we are going (June) but what else do I need to look at, worry about, plan for?