As with any theme park, there is a good time and a bad time to visit the Universal Studios Tours theme park. You should try to visit at a time when the park is less crowded to get the most out of the tour and the park.
Weekends and school holidays should be avoided at all costs. Most of the visitors at these times are local people who live in the area, and it becomes very crowded, with very long lines. The park is closed on Thanksgiving and Christmas, so don’t plan a visit during those times.
Visit the Universal Studios website to find out which movies are in production, or which movies will be in production at the time of your visit. This may play in the decision as to when to visit. If you visit during the time of a movie production, you are likely to see the movie set, and you may even get the opportunity to see the stars in action!
When you do visit, plan to get there well before the gates open. You should arrive at least thirty minutes in advance, and should buy your tickets in advance online for added convenience. This can be done here. Tickets can then be printed out using your home printer.