Nervous prior to visit - do I go?

The fam and I are going to be in the area for a week. We have talked about going to universal - mainly for HP. The problem is , that the thought of going is stressing me out to a point where it sucks out any excitement and leaves we with a nauseating belly ache. The amount of money , the lines , the wait , the crowd etc. I’m really wondering how and if this would be worth it ? I mean, it’s popular so it must be fun right ?

Can someone give me some insights to help me make a decision? Kids are 8 and 10. Is it really just gonna be a stressful day of waiting in line ? I read about express passes and it makes it seem like we will never go on any roller coster unless we start planning down to every minute and get up before the crack of dawn.

I really don’t want my anxiety to keep my family from having a good time. I’ve never been to anything but Legoland before and this park just seems so big (also why I ruled out Disney immediately - just picking where to go stressed me out !) Can someone give me like a rundown of how it works ? You just park in a lot and walk in? Some really basic informations and tips would be really helpful. Am I gonna feel like I’m At the mall Saturday before Christmas or can it actually be relaxing . We are holen that we are somewhat missing main season and that will help.

What to do - do we go ? Thanks in advance