i am a local, and no matter what time of year it is.. i go during the weekends, and try to go on the weekdays...
when i go...i have gone there so many times, my friend and i play cards in the monsters cafe, while we are waiting for the lines to die down... and we also count how many disney things people wear to universal, and how many people have non- natural colored hair... it is pretty fun...
we never waite in a line longer than 10 min. long... but we have waited in the line of the hulk when it was 30 min... that is only because that roller coaster is worth it...
it is fun to see the faces on the 'non-locals' when you are playing cards in the monsters cafe, or when you draw in mels diner, or even playing hangman waiting for a show to start, only sing a hot dog wrapper and a pen that you get from one of the employees... good times^___^