How busy is April really and are Express Passes a good idea?

Hello everyone. I am going to Universal for my 26th birthday on April 5th and the 6th, which is also a weekend. Now I’m a lifelong Floridian and a lifelong Florida amusement park-goer, so I kinda already know what to expect. But I haven’t been this time of year in a while, so maybe it won’t be as bad? I don’t know. Either way, just asking to gauge what my expectations should be and if I should possibly buy Express Passes. Which actually leads me to my second question, are Express Passes worth it? Or would I be better off saving my money and just waiting in the lines? I’m going with a group and three out of the five of us haven’t been to the parks in over 10 years. So I want them to have a great experience.